Skip to content
38

mold test kit

Skip it

Soft demand (-42.9% this quarter) — this niche doesn't clear our bar today.

Market size 14Growth 4Conversion 64Competition 7Returns 62Price range 82Avg price 83Brand share 9Review moat 71Quality gap 86

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Avg price

Great£18.24

avg listing price — sweet spot $15–$100

Price range

Great£11.00–£35.80

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

Review moat

Good646

avg incumbent reviews — the moat a new listing must climb

Conversion

Good5.6%

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

Returns

Good2.5%

return rate — above 5% kills the launch gate

Market size

Bad£56K

£56K/yr · 54K searches

Brand share

Bad97%

top-5 brand share — brand-locked demand

Competition

Bad92%

top-5 click share — a locked-up shelf

Growth

Bad-42.9%

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

According to Flapen's Amazon United Kingdom niche tracking, mold test kit is a £56K/yr Amazon United Kingdom market (54K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jan–Oct–Nov. Verdict: Skip it — 38/100.

Data updated Jul 21, 2026 · scored weekly · How we score niches

mold test kit market data

Units sold / yr
2K–3K
avg 250–500/product
Revenue / yr
£36K–£46K
units × avg price
Conversion rate
5.6%
Avg BSR
#47
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
7.7%
Avg brand age
49 months
Avg seller age
204 days

Competition & brand share

The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 falling

Sellers

12

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

92%

Top 20: 100%

Open market

0%

  • anlab54%
  • Omikrafto18%
  • Healthful Home11%
  • HAATEST8%
  • Kiprim5%
  • iigala3%

Demand & seasonality

Weekly Amazon search volume, last 64 weeks — -42.9% search growth over the last 90 days.
2K2KSpike '25Black Friday '25Spike '26MayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan, Oct, Nov · busiest ÷ quietest = 2.6×

Top mold test kit search terms

  • mold test kit19K/yr
  • mold detector9K/yr
  • mould test kit for home uk7K/yr
  • mould detector7K/yr
  • airborne mold test kit4K/yr
  • mold test kit for home uk4K/yr
  • mould test kit3K/yr
  • mould air test1K/yr
All search terms

Top mold test kit 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%15%£8K30%£17K45%£25K60%£33K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 7 tracked products in this niche — three views at once, no toggling.

What buyers say about mold test kit

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

What buyers love

Ease Of Use22%

“A very easy to use kit”

Quality-Overall17%

“Excellent product”

Value For Money16%

“Good value”

Instructions/User Manual/Troubleshooting11%

“Easy to use kit with clear instructions”

Efficiency9%

“It works”

Advertised Vs Actual Product5%

“They are as advertised”

Functionality-Overall4%

“Works well, tells of any damp”

Measurement/Reading Accuracy4%

“the results were far more reliable”

Leak-Proof2%

“We found it to work very well we ended up having a water leak travelling through a oak wood flooring”

Design-Overall1%

“This is a well designed”

What buyers complain about

Measurement/Reading Accuracy15%

“Only accurate if you see the mould beforehand”

Smell11%

“Sure enough, the test showed that there was still mould on these walls, which had a slight smell”

Functionality-Overall10%

“Did not work for me”

Value For Money8%

“needed this to see how bad it was good value for money”

Quality-Overall4%

“Rubbish”

Instructions/User Manual/Troubleshooting3%

“the manual doesn't state why only 1 hour for method 1”

Leak-Proof2%

“caused by a water leak from the flat above him”

Top return reasons

Functionality-Overall40%
Measurement/Reading Accuracy25%
Leak-Proof6%
Defective Material/Parts4%
Advertised Vs Actual Product4%
Battery Life3%
Compatibility-Overall3%
Instructions/User Manual/Troubleshooting3%
Quality-Overall3%
Ethical Trade/Fair Trade1%

Common questions

Is mold test kit profitable to sell on Amazon United Kingdom?
The niche generates £56K/yr across 7 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -42.9%. Flapen's verdict: Skip it (38/100).
How competitive is the mold test kit niche?
6 brands and 12 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 97% of demand.
What do buyers complain about in mold test kit?
Top complaints mined from reviews: Measurement/Reading Accuracy, Smell, Functionality-Overall. The return rate is 2.5%.
When does demand for mold test kit peak?
Demand peaks in Jan–Oct–Nov; the busiest month runs 2.6× the quietest.
What does it cost to enter the mold test kit niche?
Listings span £11.00–£35.80; the average listing price is £18.24 (sweet spot $15–$100). The average incumbent carries 646 reviews — the moat a new listing must climb.