---
title: "Reviews — casio fx-991ex - Flapen"
canonical_url: "https://flapen.com/research/uk/stationery-office-supplies/casio-fx-991ex/reviews"
last_updated: "2026-07-31T14:20:45.947Z"
locale: en
meta:
  description: "Niche score 44/100 · £581K/yr market · 312K searches/yr · £36.06 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 44/100 · £581K/yr market · 312K searches/yr · £36.06 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — casio fx-991ex - Flapen"
---

# **casio fx-991ex**

**Skip it**

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 63Growth 20Conversion 60Competition 15Returns 93Price range 95Avg price 95Brand share 0Review moat 33Quality gap 30

**Avg price**

**Incredible****£36.06**

avg listing price — sweet spot $15–$100

**Price range**

**Incredible****£15.12–£95.68**

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

**Returns**

**Great****1.1%**

return rate — above 5% kills the launch gate

**Market size**

**Good****£581K**

£581K/yr · 312K searches

**Conversion**

**Good****5.2%**

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

**Review moat**

**Okay****3,225.5**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Okay****4.6★**

avg incumbent rating — lower means beatable quality

**Growth**

**Bad****-10.8%**

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

**Competition**

**Bad****82%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****100%**

top-5 brand share — brand-locked demand