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51

clever spa filters

Worth a look

Shows demand growing >1,000% this quarter, but a small market ($15K/yr) keeps it on the watch list.

Market size 4Growth 100Conversion 90Competition 21Returns 99Price range 23Avg price 49Brand share 32Review moat 64Quality gap 38

Growth

Incredible>1,000%

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

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Great10.7%

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

Review moat

Good958.44

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay£11.82

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay86%

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

Price range

Bad£6.06–£17.67

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

Competition

Bad75%

top-5 click share — a locked-up shelf

Market size

Bad£15K

£15K/yr · 12K searches

Signals Trending

According to Flapen's Amazon United Kingdom niche tracking, clever spa filters is a £15K/yr Amazon United Kingdom market (12K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 51/100.

Data updated Jul 26, 2026 · scored weekly · How we score niches

clever spa filters market data

Units sold / yr
2K–2K
avg 100–250/product
Revenue / yr
£18K–£24K
units × avg price
Conversion rate
10.7%
Avg BSR
#89
Page quality
0%
Prime
75%
Sponsored
75%
Out of stock
5.1%
Avg brand age
42 months
Avg seller age
181 days

Competition & brand share

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

Brands

12 rising

Sellers

51

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

75%

Top 20: 100%

Open market

11%

  • CleverSpa49%
  • SUDS-ONLINE15%
  • Denkmsd9%
  • YanBan8%
  • Happy Hot Tubs5%
  • POOLPURE3%
  • Open — no brand owns it (6 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — >1,000% search growth over the last 90 days.
2K1KSpike '24Holiday '24Spike '25Prime Day '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 71.7×

Top clever spa filters products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%£2K20%£3K30%£5K40%£6K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

What buyers say about clever spa filters

What buyers praise and complain about, mined from review topics.

What buyers love

Advertised Vs Actual Product24%

“Just what was needed”

Filtration22%

“Replacement filters for our hot tub, arrived quickly and great price for 6 filters to be honest”

Value For Money21%

“Amazing deal, 48 filters for just £19.99”

Quality-Overall14%

“Excellent product”

Durability8%

“lasts a good time”

Size-Overall7%

“Fitted perfectly and worked well”

Assembly/Installation1%

“Easy to put in”

What buyers complain about

Filtration28%

“Very poor quality filter”

Jamming/Clogging28%

“Great price, these small filters clog up quickly, so price becomes an issue”

Quality-Overall17%

“not as good as the others I have purchased”

Size-Overall11%

“A smidgen too small = big problems later”

Top return reasons

Size-Overall79%
Filtration13%
Advertised Vs Actual Product3%
Compatibility-Overall2%
Quality-Overall2%
Functionality-Overall1%
Strength0%
Add-Ons/Attachments0%

Common questions

Is clever spa filters profitable to sell on Amazon United Kingdom?
The niche generates £15K/yr across 16 tracked products. 90-day search growth is >1,000%. Flapen's verdict: Worth a look (51/100).
How competitive is the clever spa filters niche?
12 brands and 51 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in clever spa filters?
Top complaints mined from reviews: Filtration, Jamming/Clogging, Quality-Overall. The return rate is 0.2%.
When does demand for clever spa filters peak?
Demand peaks in May–Jun–Jul–Aug; the busiest month runs 71.7× the quietest.
What does it cost to enter the clever spa filters niche?
Listings span £6.06–£17.67; the average listing price is £11.82 (sweet spot $15–$100). The average incumbent carries 958 reviews — the moat a new listing must climb.