---
title: "Products — mahjong card sleeve - Flapen"
canonical_url: "https://flapen.com/research/us/toys-games/mahjong-card-sleeve/products"
last_updated: "2026-08-08T16:01:28.563Z"
locale: en
meta:
  description: "Niche score 68/100 · $184K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 68/100 · $184K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Products — mahjong card sleeve - Flapen"
---

# **mahjong card sleeve**

**Worth a look**

Shows a thin review moat (64 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 37Growth 69Conversion 67Competition 76Returns 91Price range 39Avg price 47Brand share 86Review moat 97Quality gap 76

**Review moat**

**Incredible****64.24**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Great****1.2%**

return rate — above 5% kills the launch gate

**Brand share**

**Great****49%**

top-5 brand share — no brand owns this niche

**Competition**

**Great****39%**

top-5 click share — an open shelf

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Growth**

**Good****+49.9%**

90-day search growth — must beat 0% to launch

**Conversion**

**Good****6.0%**

search→purchase rate — share of searches ending in a sale

**Avg price**

**Okay****$11.68**

avg listing price — sweet spot $15–$100

**Price range**

**Okay****$4.96–$21.34**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Market size**

**Okay****$184K**

$184K/yr · 264K searches

**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")

## Products