---
title: "Trend — phox water filter refill - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/phox-water-filter-refill/trend"
last_updated: "2026-07-31T17:08:17.327Z"
locale: en
meta:
  description: "Niche score 52/100 · £259K/yr market · 94K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 52/100 · £259K/yr market · 94K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Trend — phox water filter refill - Flapen"
---

# **phox water filter refill**

**Worth a look**

Shows searches that convert (15.6% search→purchase), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.

Market size 48Growth 18Conversion 97Competition 34Returns 97Price range 72Avg price 82Brand share 9Review moat 62Quality gap 60

**Conversion**

**Incredible****15.6%**

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

**Returns**

**Incredible****0.7%**

return rate — above 5% kills the launch gate

**Avg price**

**Great****£17.69**

avg listing price — sweet spot $15–$100

**Price range**

**Good****£8.39–£32.22**

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

**Review moat**

**Good****1,017.83**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****£259K**

£259K/yr · 94K searches

**Competition**

**Okay****65%**

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

**Growth**

**Bad****-14.3%**

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

**Brand share**

**Bad****96%**

top-5 brand share — brand-locked demand

**Signals**[** Out of Stock**](https://flapen.com/research/niches?market=uk&signal=out_of_stock "OOS rate > 10%")