---
title: "Search terms — letter box - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/letter-box/search-terms"
last_updated: "2026-07-31T15:09:15.251Z"
locale: en
meta:
  description: "Niche score 58/100 · £723K/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 58/100 · £723K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Search terms — letter box - Flapen"
---

# **letter box**

**Worth a look**

Shows sweet-spot pricing room ($7.36–$80.66), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 69Growth 19Conversion 35Competition 83Returns 46Price range 87Avg price 83Brand share 68Review moat 48Quality gap 68

**Price range**

**Great****£7.36–£80.66**

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

**Competition**

**Great****32%**

top-5 click share — an open shelf

**Avg price**

**Great****£18.32**

avg listing price — sweet spot $15–$100

**Market size**

**Good****£723K**

£723K/yr · 1.4M searches

**Brand share**

**Good****65%**

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

**Quality gap**

**Good****4.3★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Okay****1,732.66**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Okay****3.3%**

return rate — above 5% kills the launch gate

**Conversion**

**Okay****2.8%**

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

**Growth**

**Bad****-11.7%**

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