---
title: "Reviews — filling knife - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/filling-knife/reviews"
last_updated: "2026-07-31T12:42:14.354Z"
locale: en
meta:
  description: "Niche score 48/100 · £199K/yr market · 229K searches/yr · £6.14 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 48/100 · £199K/yr market · 229K searches/yr · £6.14 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — filling knife - Flapen"
---

# **filling knife**

**Skip it**

Pricing outside the sweet spot ($6.14 avg) — this niche doesn't clear our bar today.

Market size 39Growth 19Conversion 96Competition 33Returns 99Price range 32Avg price 17Brand share 52Review moat 49Quality gap 45

**Returns**

**Incredible****0.3%**

return rate — above 5% kills the launch gate

**Conversion**

**Incredible****14.2%**

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

**Brand share**

**Good****74%**

top-5 brand share — brands hold most of the demand

**Review moat**

**Okay****1,634.78**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****£199K**

£199K/yr · 229K searches

**Competition**

**Okay****65%**

top-5 click share — leaders hold, buyers still browse

**Price range**

**Okay****£2.07–£21.16**

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

**Growth**

**Bad****-12.5%**

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

**Avg price**

**Bad****£6.14**

avg listing price — sweet spot $15–$100