---
title: "Reviews — white window pens for glass - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/white-window-pens-for-glass/reviews"
last_updated: "2026-07-31T13:48:23.065Z"
locale: en
meta:
  description: "Niche score 39/100 · £9K/yr market · 15K searches/yr · £4.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 39/100 · £9K/yr market · 15K searches/yr · £4.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Reviews — white window pens for glass - Flapen"
---

# **white window pens for glass**

**Skip it**

Prices mostly outside the sweet spot ($2.68–$7.71) — this niche doesn't clear our bar today.

Market size 2Growth 18Conversion 95Competition 24Returns 98Price range 0Avg price 14Brand share 49Review moat 32Quality gap 60

**Returns**

**Incredible****0.4%**

return rate — above 5% kills the launch gate

**Conversion**

**Great****11.9%**

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

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Brand share**

**Okay****76%**

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

**Review moat**

**Okay****3,303.36**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Bad****71%**

top-5 click share — a locked-up shelf

**Growth**

**Bad****-14.7%**

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

**Avg price**

**Bad****£4.87**

avg listing price — sweet spot $15–$100

**Market size**

**Bad****£9K**

£9K/yr · 15K searches

**Price range**

**Bad****£2.68–£7.71**

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