---
created: 2026-09-28
summary: Measured Amazon .com / .co.uk / .de numbers for the MBM GROW coaching-card family and 30+ competing question-card decks, with unit and revenue estimates and a go/no-go read for a metaFox GROW deck.
tags: [research, pd-grow-cards, amazon, competitor, mbm]
builds_on: ../../pd-mbm-competitor/research/amz-uk-mbm-baseline-2026-09-24.md
---

# GROW coaching cards: Amazon sales analytics (2026-09-28)

**Question:** is a metaFox GROW-style coaching question deck worth making?
**Short answer:** as a stand-alone Amazon product, it's small. A copy of MBM makes roughly **5-30 units a month per marketplace per deck**, and MBM's own German GROW edition hardly sells. It becomes worth doing only if it is clearly different: visual, with a method booklet, and sold on .com and .de together. Numbers and verdict are below.

Raw data: [sales-data.json](sales-data.json) (106 rows, one per marketplace x ASIN, with the arithmetic string for each estimate).
Prior work built on: [pd-mbm-competitor UK baseline (AMZScout, 2026-09-24)](../../pd-mbm-competitor/research/amz-uk-mbm-baseline-2026-09-24.md).
Physical reference deck Max scanned (`../prototype/MBM GROW Cards scan.pdf`) = the **Advanced GROW** edition (B08ZX932HD).

## How the data was collected

- **Source:** live Amazon product and search pages, 2026-09-28. Fetched with headless Chrome through Amazon's bot check. The delivery address was set to New York 10001, London SW1A 1AA and Berlin 10115, so prices show in each marketplace's own currency. 18 search queries were run (6 per marketplace, 2 pages each) and about 110 product pages were read.
- **No SP-API:** `/srv/team.env` only holds Amazon **Ads** API credentials (`AMZ_ADS_*`). There are no SP-API catalog/pricing credentials and no `amz-*` catalog script, so nothing touched the seller account.
- **Blocked sources:** the MBM website sits behind Cloudflare. Headless Chrome got through for the GROW and Advanced GROW pages. Etsy, camelcamelcamel and keepa were blocked.
- **"Not found"** means the page did not load or the listing does not exist in that marketplace. Every figure in the tables comes from the listed Amazon page unless marked otherwise.

## Open question 1 from pd-mbm-competitor: are the MBM rating counts UK-only?

**No. They are pooled across countries.** Evidence:
- The UK GROW page splits reviews into "Top reviews from the United Kingdom" and "Top reviews from other countries" (US, Italy, France, Australia, UAE all show up).
- The .de GROW listing shows **118 ratings, but every review shown is from the UK, US or Italy. None is from Germany.** The .com page labels its count "120 global ratings".
- The same ASIN shows a different count per store (UK 133 / US 120 / DE 118), so each store shows a pooled set.

So the AMZScout "ratings x 50 = UK units" method overstates UK units. The UK share of the 133 could not be measured, because the per-country count needs a signed-in session. Ratings also include **Amazon Vine free units**: 12 of the 13 visible Premium GROW reviews are Vine reviews.

## Estimation method

1. **"Bought in past month" badge:** used when shown. A badge of N+ is read as N up to just below the next tier (50+ means 50-99, 100+ means 100-199, and so on).
2. **Otherwise, BSR power law:** units/month = A x BSR^-0.9.
   - The slope of 0.9 and the US Toys level of A = 1,100,000 come from Trendlytic's published calculator. The coefficients were read from its JavaScript bundle (https://www.trendlytic.io/tools/amazon-bsr-calculator, where Toys & Games is A: 11e5, B: .9, with a stated band of x0.6 to x1.4). I found no published coefficients for UK or DE. AMZ Prep, Easyparser, Helium10 and danielgaiswinkler.com publish none for Toys, and SellerAmp/ClearTheShelf only give rank percentiles.
   - **So I calibrated A for each marketplace myself** against Amazon's own badges: 28 listings where both a badge and a BSR were visible on the same day. A_low uses the badge floor, A_high uses the badge ceiling, and each is the median across the listings (every calibration listing is a badge row in sales-data.json):

| Calibration set | n | A_low | A_high | vs Trendlytic US 1.1M |
|---|---|---|---|---|
| US Toys & Games | 13 | 1,952,633 | 3,794,252 | 1.8-3.5x (the published model **underestimates** these badge-carrying decks) |
| UK Toys & Games | 5 | 495,508 | 981,107 | 0.45-0.89x |
| UK Stationery & Office | 3 | 320,098 | 636,995 | 0.29-0.58x |
| DE Spielzeug | 2 | 385,284 | 610,894 | 0.35-0.56x |
| DE Bürobedarf & Schreibwaren | 5 | 283,218 | 550,258 | 0.26-0.50x |

   - **US range** = the lower of (Trendlytic x 0.6) and (A_low model), up to the higher of (Trendlytic x 1.4) and (A_high model).
   - **UK:** where the 2026-09-24 AMZScout BSR exists, both snapshots are used. The low estimate uses the worse rank and the high estimate uses the better one.
3. **Caveats, stated plainly:**
   - All calibration points sit at BSR 2k-120k. The MBM decks sit at **100k-1.1M**, so their estimates are extrapolations and could be off by 2x or more.
   - A single BSR reading for a slow seller spikes right after one sale. The UK GROW rank moved from 73,304 to 44,613 in 4 days.
   - Badge-carrying listings are a biased sample: they are the ones that sold.
   - Books and Office Products ranks were not converted, because I had no calibration for them.
4. **Revenue** = units x current list price. That is gross, including VAT in the UK and DE, and before Amazon fees.
5. **Ratings-growth check:** global ratings per month since listing, divided by 1-3% (the assumed share of buyers who leave a rating), gives global units per month across all stores. This check overstates sales because some ratings come from Vine free units.

Worked example (UK GROW, B0896644P8, BSR 44,613 today and 73,304 on 2026-09-24):
- low = 495,508 x 73,304^-0.9 = **20.7/month**
- high = 981,107 x 44,613^-0.9 = **64.2/month**
- Revenue = 20.7-64.2 x £19.99 = **£414-1,283/month**

## MBM family

No MBM listing shows a "bought in past month" badge in any of the three marketplaces. That fits sales below 50 a month, but it proves nothing on its own: the "52 Essential EI" deck at US BSR 8,997 shows no badge either.

Common facts for the family: 80 cards (Leadership: 100). Card size is "approx. playing-card size" (MBM site) and 11 x 7.5 cm on the Amazon UK listing (4.33 x 2.95 in on US). Seller "Making Business Matter (MBM)". Fulfilment differs: the 3-4 biggest decks (GROW, Premium, Advanced, Leadership) show "Sold by MBM" with separate shipper, meaning Amazon-fulfilled (verified "Ships from: Amazon" on US GROW). The long tail shows "Shipper / Seller: MBM" (merchant-fulfilled). The baseline's "all merchant-fulfilled" is therefore not quite right. The MBM website sells each deck at £19.99 including UK postage, offers a free online tool with a third of the questions, custom-branded decks, and bulk orders of 100+ decks.

**Date first available:** Amazon Toys pages no longer show it. Where given, the date is the UK listing date from the 2026-09-24 AMZScout baseline. Everything else is not found.

### amazon.com (USD)

| Deck | ASIN | Price | Rating (n) | BSR Toys | Sub-rank | Est. units/mo | Est. revenue/mo |
|---|---|---|---|---|---|---|---|
| Leadership | B087H44V2R | 34.99 | 4.5 (64) | 428,205 | #6,218 Dedicated Deck Card Games | 5.6-32 | $196-1,134 |
| **GROW** | B0896644P8 | 34.99 | 4.6 (120) | 456,788 | #6,559 Dedicated Deck | 5.3-31 | $185-1,071 |
| **Advanced GROW** | B08ZX932HD | 34.99 | 4.3 (63) | 476,388 | #2,567 Educational | 5.1-29 | $178-1,029 |
| **Premium GROW** | B0CKF6R66R | 38.24 | 3.9 (24) | 486,440 | #6,923 Dedicated Deck | 5.0-29 | $191-1,105 |
| OSCAR | B0DVZHP3C8 | 34.99 | 4.8 (5) | 645,176 | #8,875 Dedicated Deck | 3.9-22 | $136-784 |
| NLP | B09217QZQ6 | 34.99 | 3.7 (39) | 684,264 | #3,299 Educational | 3.7-21 | $129-745 |
| Career & Feedback | B0BL87PL8S | 29.74 | 3.8 (29) | 1,083,477 | #5,755 Souvenir | 2.4-14 | $71-419 |
| C-Suite | B0921FLVR1 | 29.74 | 1.0 (2) | 1,129,455 | #4,908 Executive | 2.4-14 | $71-401 |
| Be Your Eagle | B0D6WS9CRS | 34.99 | 5.0 (1) | 1,137,464 | #13,815 Dedicated Deck | 2.3-14 | $80-472 |
| New Manager | B08FRV1QFB | 29.74 | 2.9 (5) | #902,234 Office Products | #12,374 | not estimated (Office) | - |
| German GROW / "Personal Growth" | B0D3VGVN4B | 34.99 | none | no BSR | - | ~0 | - |
| Advanced GROW (UK ASIN) | B0F9LRRD5Z | not found | | | | | |

Worked example (GROW, US): Trendlytic 1.1M x 456,788^-0.9 = 8.9 (band 5.3-12.5). Calibrated model: 1.95M-3.79M x 456,788^-0.9 = 15.8-30.6. Range 5.3-30.6.

### amazon.co.uk (GBP)

| Deck | ASIN | Price | Rating (n) | BSR Toys today (09-24) | Sub-rank | Listed (UK) | Est. units/mo | Est. revenue/mo |
|---|---|---|---|---|---|---|---|---|
| **GROW** | B0896644P8 | 19.99 | 4.5 (133) | 44,613 (73,304) | #693 Dedicated Deck | 2020-05-26 | **21-64** | £414-1,283 |
| Leadership | B087H44V2R | 19.99 | 4.5 (71) | 96,393 (155,037) | #1,323 | 2021-03-25 | 11-32 | £212-642 |
| **Advanced GROW** | B08ZX932HD | 19.99 | 4.3 (66) | 126,384 (181,616) | #1,681 | 2021-04-30 | 9-25 | £184-502 |
| Career & Feedback | B0BL87PL8S | 19.99 | 3.8 (30) | 233,506 (190,686) | #3,017 | 2023-01-23 | 7-17 | £146-348 |
| NLP | B09217QZQ6 | 19.99 | 3.8 (45) | 245,468 (233,174) | #3,176 | 2021-04-07 | 7-15 | £140-290 |
| OSCAR | B0DVZHP3C8 | 19.99 | 4.8 (5) | 281,294 (264,039) | #3,657 | 2026-06-22* | 6-13 | £124-258 |
| C-Suite | B0921FLVR1 | 19.99 | 2.9 (4) | 353,546 (352,840) | #4,571 | 2021-04-30 | 5-10 | £100-200 |
| New Manager | B08FRV1QFB | 19.99 | 2.9 (6) | 354,457 (352,141) | #4,590 | 2021-03-30 | 5-10 | £100-200 |
| Be Your Eagle | B0D6WS9CRS | 19.99 | 5.0 (2) | 456,334 (446,401) | #6,037 | 2026-06-22* | 4-8 | £80-162 |
| **Premium GROW** | B0CKF6R66R | 29.99 | 3.7 (25) | no BSR | - | not found | not estimated | - |
| Personal Growth (= DE German GROW ASIN) | B0D3VGVN4B | 19.99 | 4.0 (1) | no BSR | - | not found | ~0 | - |
| Advanced GROW (new ASIN) | B0F9LRRD5Z | not found | | | | | | |

\* 2026-06-22 is probably a relist date.

AMZScout's own figure of about 1 unit/month per MBM deck (baseline) is **too low**. On the same day, AMZScout put the lazy panda deck at about 47/month while Amazon showed it a **100+** badge.

### amazon.de (EUR)

| Deck | ASIN | Price | Rating (n), all foreign | BSR | Est. units/mo | Est. revenue/mo |
|---|---|---|---|---|---|---|
| Leadership ("Führung Coachingkarten", English deck) | B087H44V2R | 24.99 | 4.5 (64) | 329,839 Bürobedarf | 3.1-5.9 | €77-147 |
| Advanced GROW (English) | B08ZX932HD | 24.99 | 4.3 (62) | 378,012 Bürobedarf | 2.7-5.3 | €67-132 |
| **German-language GROW** ("Grow Coachingkarten auf Deutsch, 80 Stück") | B0D3VGVN4B | 24.99 | **no ratings** | 473,487 Spielzeug (#4,748 sub) | 3.0-4.8 (extrapolated; likely lower) | €75-120 |
| GROW (English) | B0896644P8 | 24.99 | 4.6 (118) | 488,220 Spielzeug (#4,869 sub) | 2.9-4.6 | €72-115 |
| New Manager | B08FRV1QFB | 24.99 | 2.9 (5) | 552,257 Bürobedarf | 1.9-3.7 | €47-92 |
| Premium GROW, C-Suite, NLP, Career & Feedback, OSCAR, Be Your Eagle | various | 24.99 | pooled | **no BSR** | ~0 | - |

**MBM already has a German GROW deck on .de, and it has no ratings.** German demand for a GROW question deck is unproven, not an untouched gap.

### Ratings-growth check (global ratings, all stores)

| Deck | Global ratings | Months listed | Ratings/mo | Global units/mo at 1-3% rating rate | Sum of BSR estimates, US+UK+DE |
|---|---|---|---|---|---|
| GROW | 133 | 76 | 1.75 | 58-175 | 29-100 |
| Advanced GROW | 66 | 65 | 1.02 | 34-102 | 17-59 |
| Leadership | 71 | 66 | 1.08 | 36-108 | 20-70 |

The two methods overlap at the top of the BSR range and the bottom of the ratings range. The ratings column overstates because it includes Vine free units, and because the lifetime average includes launch-period giveaways. Ratings were unchanged since 2026-09-24 (133 / 66 / 71), which rules out a recent review burst.

**MBM's GROW family total** (GROW + Advanced + Premium, three stores) is roughly **40-190 units/month**, or about €1,000-5,000 gross a month. The UK is the biggest store for MBM, even though the US price is higher.

## Competitors

These are the top relevant question or coaching decks found by the 18 searches. "Badge" means Amazon's own "bought in past month" figure, which is measured. Everything else is modelled with the method above.

### amazon.com: the manager/leadership question-deck segment is alive

| Deck | ASIN | Price | Rating (n) | Badge | BSR Toys | Est. units/mo |
|---|---|---|---|---|---|---|
| 160 Team Building Cards for Managers | B0G4HFYKNJ | 29.99 | 4.8 (37) | **200+** | 40,519 | 200-299 |
| Prompta 400 Conversation Cards for Coworkers | B0C8PN5369 | 19.99 | 4.6 (190) | **200+** | 42,227 | 200-299 |
| Conversation Cards for Coworkers & Managers | B0G6VTSJFQ | 24.99 | 4.1 (39) | **100+** | 58,527 | 100-199 |
| Esther Perel "Where Should We Begin? At Work" | B0F7MYRWJZ | 26.99 | 4.6 (99) | **100+** | 71,187 | 100-199 |
| The NLP Oracle | B0FRR7R849 | 24.95 | 4.6 (69) | **100+** | 78,683 | 100-199 |
| We! Connect (teams icebreaker) | B06XH1HX7N | 39.00 | 4.7 (846) | **100+** | 28,628 | 100-199 |
| Core Values Card Sort (208) | B0F3WTCJCG | 34.95 | 4.3 (56) | **100+** | 46,122 | 100-199 |
| DBT Skills Coaching Cards (25) | B0FR9D4WB2 | 15.99 | 4.5 (36) | **100+** | 59,324 | 100-199 |
| One on Ones Leadership Conversation Cards | B0CVL4762N | 29.99 | 4.8 (97) | **50+** | 63,611 | 50-99 |
| The Leader's Toolkit, 54 problem-solving cards | B0DGLJZJPG | 44.99 | 5.0 (22) | **50+** | 81,773 | 50-99 |
| Holstee Reflection Cards | B07JM14W5L | 21.85 | 4.6 (888) | **50+** | 120,561 | 50-99 |
| 200 Team Building Conversation Cards for Managers (Talking Point) | B0CRHXC9L6 | 34.95 | 4.5 (159) | none | 195,104 | 11-66 |
| The Unstuck Box: Performance Improvement, 100 coaching cards | B0D1S7DTLC | 29.99 | 4.5 (15) | none | 272,102 | 8.5-49 |
| Leadership Skills Card Deck (52) | B0FXS7TP89 | 19.95 | no ratings | none | 350,419 | 6.8-39 |
| The Manager's Playbook (55) | B0H195XGNG | 22.99 | 4.8 (15) | none | 409,553 | 5.9-34 |
| Help Them Grow or Watch Them Go deck (Berrett-Koehler) | 1523097981 | n/a | 4.8 (52) | none | #354,688 Books | not estimated |
| Barefoot Coaching Cards for Teams | 0992898900 | n/a | 4.5 (39) | none | no BSR | not estimated |

No non-MBM GROW deck was found on .com.

### amazon.co.uk

| Deck | ASIN | Price | Rating (n) | Badge | BSR | Est. units/mo |
|---|---|---|---|---|---|---|
| 52 Mindfulness Conversation cards (the lazy panda / Square One) | B07R17SDGF | 9.95 | 4.4 (273) | **100+** | 19,086 Stationery | 100-199 |
| 200 Team Building Conversation Cards for Managers | B0CRHXC9L6 | 29.95 | 4.5 (159) | none | 77,931 Toys | 20-39 |
| Career Coaching Cards (20 theories, A5) | B0DBR99F83 | 21.95 | 5.0 (6) | none | 195,707 Stationery | 5.5-11 |
| Strengthwise 54 Mighty Mind Coaching Cards | 2959052609 | 28.74 | 3.8 (38) | none | 640,548 Books | not estimated |
| Reveal More "Coaching Cards Introduction to GROW" / "set GROW model" / "Advanced GROW" | B004DX7BG6 / B004EF2BPO / B004EF7I3Y | no price shown | 4.5 (21) / 4.8 (10) / 4.0 (2) | none | no BSR | ~0 (older 2010 GROW decks, dormant) |
| Barefoot Coaching Cards for Teams | 0992898900 | 7.48 | 4.5 (46) | none | no BSR | not estimated |
| The Manager's Playbook | B0H195XGNG | 19.80 | 4.8 (14) | none | no BSR | not estimated |
| GO NO GO decision cards (Soul Games) | 2491869284 | 31.98 | none | none | no BSR | not estimated |

Calibration points outside the segment (kids/family conversation decks, all with badges) are in the JSON.

### amazon.de

| Deck | ASIN | Price | Rating (n) | Badge | BSR | Est. units/mo |
|---|---|---|---|---|---|---|
| 52 Achtsamkeitskarten (Square One) | B07RX6B8R2 | 9.95 | 4.6 (571) | **300+** | 3,050 Bürobedarf | 300-399 |
| 50 Achtsamkeit Gesprächsfragen & Bilder (athousandwords) | B08L6KHQ4X | 8.95 | 4.6 (268) | **100+** | 4,765 Bürobedarf | 100-199 |
| 80 Achtsamkeitskarten (Square One) | B0DZ2LZ694 | 14.95 | 4.8 (30) | **100+** | 6,670 Bürobedarf | 100-199 |
| Edition Seidel 50 Motivationspostkarten | B07Q8QTT1J | 15.99 | 4.5 (329) | **100+** | 11,319 Bürobedarf | 100-199 |
| 45 Coaching Bildkarten A5 (2DOBOARD) | B09Y23XCJ2 | 34.95 | 4.5 (132) | none | 26,139 Spielzeug | 41-65 |
| Delegation Poker (Ulassa) | B088WYKD6B | 19.97 | 4.5 (82) | none | 38,301 Spielzeug | 29-46 |
| Coaching Karten Set, Ziele setzen (SinnSTIFTen, 32 drawn cards) | B07TV3L3B7 | 17.90 | 4.3 (274) | none | 42,095 Bürobedarf | 20-38 |
| Lebenskarten Serie 1 (72 cards + booklet) | B004KSWCHW | 24.80 | 4.6 (432) | none | 43,733 Spielzeug | 26-41 |
| Sondermoment Teams, Icebreaker | B0DX2FW99W | 16.90 | 4.3 (53) | none | 44,504 Spielzeug | 25-40 |
| **metaFox Führungsfacetten (own)** | B0DPYKZ5T4 | 28.95 | 4.0 (13) | none | 72,906 Spielzeug | 16-26 |
| Team-Fragekarten für Retrospektiven (2DOBOARD) | B0DH4ZD3BM | 19.95 | 4.3 (68) | none | 154,107 Spielzeug | 8-13 |
| Coaching-Karten für Kita-Teams (book format) | B0C4PZG1T9 | n/a | 4.7 (33) | none | 47,337 Bücher | not estimated |
| ExpressoCoach für Führungskräfte, 111 cards (2006) | 3821858850 | used only | 4.8 (6) | none | 1,523,123 Bücher | ~0 |

**Model check you can run in 2 minutes:** compare the 16-26/month modelled for metaFox Führungsfacetten with the real Seller Central units for B0DPYKZ5T4 (last 30 days). If they match, trust the DE numbers. If they are 2x off, scale all DE figures by the same factor.

## Review mining (MBM plus nearest competitors)

Source: review text on the .co.uk and .de product pages, 2026-09-28 (13 top reviews per listing, which includes US, IT, FR and AU reviews). The US store would not show review text without sign-in.

**What buyers praise**
- **Structure:** GROW, 20 questions per stage, numbered and colour-coded. Amazon's AI summary for UK GROW tags "Card quality (41), Usefulness (40), Ease of use (16) … Instructional material (6)". "Love the numbered layout to ask the questions and the separate stacks" (Kaz, UK, 03/2026). "the color-coding and numbers make separating the G.R.O.W. steps quick and intuitive" (Natalia, US, 10/2025).
- **Buyers are coaches in training:** "As a new coach in training … a game-changer" (Karl Wright, UK). "apprentice currently studying for the Level 5 Professional Coaching qualification … a great revision aid as I prepare for my EPA" (H C Statham, UK, 05/2026). "recommended by my coaching seminar lecturer" (KTP, UK). This is a course-bundling channel.
- **Physical and visual use:** "help my coachees work through their sessions by visually seeing the questions" (Vicky McCreadie, UK, Advanced). "excellent tool to use with clients who have a preference for kinaesthetic thinking" (Dr Victoria A Hewitt, UK, Advanced). "I spread a few cards out on my desk to glance at between stages" (Sarah, UK, Advanced).
- **Card stock:** "feel premium and durable". "even after years of use they are in good condition" (Lee Jones, UK, Advanced).

**What buyers complain about**
- **Questions too basic or repetitive (the biggest theme):** "a bit elementary" (Ralph, US, Premium). "definitely for beginners … nothing here you could use to grow yourself as a coach" (konw, UK, Premium). "many prompts are quite similar rather than being 'outside-the-box' creative" (UK GROW, 02/2026). "Lot of money for some cards that have very similar text" (Patrick Jane, UK, Premium, 2★). "questions … can easily be sourced online" (Fruity, UK, Career & Feedback, 2★). The same complaint about a German competitor: "viele Fragen sehr ähnlich … nichts, was man nicht auch in … kostenlosen Ratgebern im Netz findet" (Team-Fragekarten).
- **Advertising cards inside the deck:** "an additional 23 cards shuffled in to the set that are to be thrown away … literal advertising" (K, US, Premium). "a lot of cards with advertising for the sellers' company … really off-putting" (Mystique, UK). Also Fruity, konw and TheReviewer.
- **Price vs content:** "the price for these cards seems very high for what they are" (My Name Is Prince, UK, Premium). "not as premium as the price suggests" (konw). "Helpful, Expensive" (K, US). German reviewers: "Preis/Leistung nicht ausreichend" (Coaching Karten Set). "Für die Hälfte wäre ich eher geneigt" (Team-Fragekarten at €19.95).
- **Box and packaging:** Premium box "quite scuffed … no plastic shrink wrap" (UK Vine). "la boite est arrivée abimée, pas sous blister" (FR, Advanced). A "keepsake box" that is only thick card: "definitely not wood … no magnet" (konw).
- **Not localised for the US:** "created by a UK company so the spellings are not American English … references to £ instead of $" (Ralph, US).
- **Finish:** "the matte side can sometimes make the cards stick together" (Natalia, US). "satin-like cover of some of the cards" (konw).
- **Card size:** hardly an MBM complaint. For Barefoot's small deck: "Would have expected these to be bigger" (UK). Picture decks draw complaints about paper, not size (lazy panda A6: "not printed on card … thickish glossy paper").
- **Instructions:** MBM has a few instruction cards plus a free online tool and videos. Buyers like them ("supplementary tips offers valuable guidance for beginner coaches"). One says you "would need to learn the model" first (Turkey, UK).

## Gaps metaFox could fill

1. **Depth tiers in one deck.** Beginner vs advanced is MBM's main complaint, and MBM splits it into separate £20-35 decks. One deck with graded questions per stage (plus follow-up and challenge questions) answers "too basic / too similar".
2. **A visual layer.** Every GROW deck found is text only. Buyers already use them visually ("visually seeing the questions", kinaesthetic clients). The best-selling German coaching decks are image-plus-question decks (Achtsamkeitskarten 300+/month at €9.95; 45 Bildkarten at about 41-65/month at €34.95). A GROW deck with stage images or structure cards, tied to the VCC/VOC method, is something MBM cannot copy quickly.
3. **A real method booklet, and no ads.** Replace MBM's 23 promo cards with a short "how to run a 30-minute GROW session" guide and worked examples. That turns a complaint into a selling point.
4. **Bilingual EN/DE, with US spelling for .com.** MBM's German deck is dormant (0 ratings) and its US deck carries UK spelling and £. Two SKUs (DE; EN-US/intl), or one bilingual deck.
5. **FBA/Prime across the whole range.** MBM runs FBA only on its top decks. The long tail, including the German GROW edition, is merchant-fulfilled from the UK.
6. **The coach-training channel.** Several buyers were recommended the deck by their course lecturer. Bundling with VOC or ICF-style courses and B2B bulk (MBM offers 100+ and custom branding) is a channel beyond Amazon.
7. **Digital:** not a clean gap. MBM already gives a third of the questions free online. A digital companion inside metaFox.online (GROW board template) is a differentiator, not a gap.

## Verdict

| Marketplace | MBM GROW now (per deck) | Nearest comparables | **Realistic metaFox GROW deck, year 1** |
|---|---|---|---|
| amazon.com | 5-31 units/mo, $185-1,070 | New manager/leadership decks launched 2025-26 do 100-299/mo (badges, ~37-39 ratings). Unbadged ones do about 6-49/mo. | **10-50 units/mo** (about $250-1,500 gross at $24.99-29.99). 100+ only if it breaks out like the "160 Team Building Cards for Managers" deck. |
| amazon.de | 3-5 units/mo (English deck; German edition has 0 ratings) | Text coaching decks 8-38/mo; own Führungsfacetten modelled at 16-26/mo; image decks 100-399/mo at €9-15 | **5-25 units/mo** (about €125-625 gross at €24.95) |
| amazon.co.uk (for reference) | GROW 21-64 units/mo, Advanced 9-25 | lazy panda 100-199 | 5-20 units/mo head-on against MBM's home market |

**My read:** a plain GROW question deck (an MBM copy) is **not worth making for Amazon alone**. It would add about 15-75 units a month across .com and .de, and it would face MBM's 6-year rating lead in the UK and a buyer base already complaining that the content is generic. A **differentiated** deck is worth a small first print run: visual, graded depth, EN/DE, a method booklet, FBA, and bundled into VOC and coach-training courses. The Amazon upside is the US manager/leadership segment, where new decks reach 100-300 a month, rather than the "GROW" keyword itself: MBM's US GROW ranks about 457k.

## Not found / not verified

- UK-only vs pooled share of MBM ratings (needs a signed-in session). Pooling itself is verified.
- "Date first available" for all Toys listings (Amazon no longer prints it). UK listing dates come from AMZScout.
- B0F9LRRD5Z (Advanced GROW, UK ASIN): the page did not load in any of the three stores.
- US review text (sign-in wall). US review themes come from US reviews shown on the UK and DE pages.
- MBM website sales claims, the Etsy shop sales count (Etsy blocked), and keepa/camelcamelcamel history (blocked).
- A published BSR-to-sales table for UK and DE. I used my own badge calibration (n = 5-13 per marketplace) instead.
- No SP-API credentials exist, so there are no seller-side catalog numbers.