---
title: "Trend — photochromic sunglasses - Flapen"
canonical_url: "https://flapen.com/research/uk/fashion/photochromic-sunglasses/trend"
last_updated: "2026-07-31T15:07:36.171Z"
locale: en
meta:
  description: "Niche score 60/100 · £42K/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 60/100 · £42K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Trend — photochromic sunglasses - Flapen"
---

# **photochromic sunglasses**

**Worth a look**

Shows a sweet-spot price point ($22.78 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 11Growth 75Conversion 20Competition 92Returns 80Price range 26Avg price 94Brand share 74Review moat 43Quality gap 78

**Avg price**

**Great****£22.78**

avg listing price — sweet spot $15–$100

**Competition**

**Great****23%**

top-5 click share — an open shelf

**Returns**

**Great****1.7%**

return rate — above 5% kills the launch gate

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Growth**

**Great****+60.0%**

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

**Brand share**

**Good****61%**

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

**Review moat**

**Okay****2,211.49**

avg incumbent reviews — the moat a new listing must climb

**Price range**

**Okay****£8.19–£341.39**

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

**Conversion**

**Bad****1.6%**

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

**Market size**

**Bad****£42K**

£42K/yr · 117K searches