---
title: "Trend — cistern blocks - Flapen"
canonical_url: "https://flapen.com/research/uk/grocery/cistern-blocks/trend"
last_updated: "2026-07-31T17:55:31.051Z"
locale: en
meta:
  description: "Niche score 49/100 · £57K/yr market · 106K searches/yr · £6.16 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 49/100 · £57K/yr market · 106K searches/yr · £6.16 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Trend — cistern blocks - Flapen"
---

# **cistern blocks**

**Skip it**

Prices mostly outside the sweet spot ($1.03–$14.85) — this niche doesn't clear our bar today.

Market size 14Growth 16Conversion 82Competition 62Returns 100Price range 0Avg price 17Brand share 44Review moat 42Quality gap 92

**Returns**

**Incredible****0.1%**

return rate — above 5% kills the launch gate

**Quality gap**

**Great****4.0★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Great****8.8%**

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

**Competition**

**Good****48%**

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

**Brand share**

**Okay****79%**

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

**Review moat**

**Okay****2,343.27**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Bad****£6.16**

avg listing price — sweet spot $15–$100

**Growth**

**Bad****-17.3%**

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

**Market size**

**Bad****£57K**

£57K/yr · 106K searches

**Price range**

**Bad****£1.03–£14.85**

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