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Stain Block

Fail

Prices span $4.40–$15.55, mostly outside the sweet spot, so Stain Block is a Fail.

Flapen Score
40
40 / 100
Ranks 1,848 of 2,225 DIY & Tools niches · −9 vs the category median of 49
Market size
£44K/yr43K searches / yr
90-day growth
-29.4%search demand this quarter
Competition
79%top-5 click share · 10 brands · 73 sellers

Flapen Score

Stain Block against its category

The dotted line is the DIY & Tools average. Past it, Stain Block is stronger. Inside it, weaker.

40Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Stain Block market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Stain Block 43K times last year and spent an estimated £44K. The top 5 brands take 87% of clicks. Flapen scores it 40 out of 100, a Fail.

01 · Demand

11.7% of searches ended in a purchase last week.

Shoppers searched for this 43K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 11.7% of those searches ended in a purchase. Searches in the last 90 days moved -29.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated £44K a year.

Searches, last 12 months
43K
Growth, 90 days vs prior 90
-29.4%
Conversion, latest week
11.7%
Market size, estimated
£44Ka year
Peak month
February1.5× the quietest month
Top search term
stain block23K searches a year

02 · Price

A sale here is worth £8.83.

Listings sell for £8.83 on average, from £4.40 to £15.55. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 250 to 500 of them. At £8.83 that is £2K to £4K a year per listing.

Average price
£8.83under the $15 to $100 sweet spot
Price range
£4.40–£15.55
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
250–500
Revenue per listing a year
£2K–£4K
Returns
0.8%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

69% of listings pay for placement with sponsored ads. 85% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #122 within Adhesives & Sealers. It carries 1,232 reviews at 4.20 stars, so a new listing needs social proof before a better product.

Sponsored listings
69%
Prime listings
85%
Out of stock, average day
0.0%
Average rank
#122in Adhesives & Sealers
Average rating
4.20 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,232per listing
Listings tracked
13

04 · Newcomers

Amazon counts 1 of last year's 1 launches as successful.

1 products launched here in the last 12 months. Amazon counts 1 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 82 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
1Amazon's first-year sales bar
Average brand age
82 months

Products

Top Stain Block products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 79% of clicks. A locked shelf that new listings rarely crack.

£0£4K£9K£13K£18K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

10 rising

Sellers

73

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

79%

Top 20: 100%

Open market

7%

  • Everbuild27%
  • Polar Specialist Coatings22%
  • Pro-Kleen22%
  • RUSTINS11%
  • Bartoline6%
  • Zinsser5%
  • Open — no brand owns it (4 brands, 7%)

Demand

Stain Block search demand

Weekly searches over the year, seasonality beneath. Pick a range.

1K750Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Search terms

Top Stain Block search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • stain block23K/yr
  • stain blocker spray16K/yr
  • stain block spray4K/yr

Reviews and returns

What reviews say buyers love and hate about Stain Block

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Paint Quality14%+0.31

Stain cover Paint

I was expecting a thick paint

Also not enough paint in the spray

Smell12%−0.02

It smells terrible

has a strong lingering smell

Smells really strong

Spray/Flow11%−0.11

One of these cans will not spray at all

Poor cheap nozzles making the product impossible to use

it wouldnt spray

Leak-Proof6%

Water leak through ceiling

It leaked the first time used

Kept bleeding through

Quality-Overall4%+1.08

Poor quality

Rubbish

Absolute rubbish

Love

Advertised Vs Actual Product17%+0.97

Just what I needed

Does what its supposed to do

Does the job

Quality-Overall16%+1.08

Excellent coverage

Excellent product

Good quality, quality seems thin

Stain Resistance9%+0.29

Covered the water stain completely

it works well to cover stains

Good stain blocker

Ease Of Use7%+0.39

Easy to use

easy to apply

Sprays even and easy to use

Efficiency6%+0.64

Does the job

It does a good job works well

Works well

Return

0.8% Return rate 14% Fixable by listing

Spray/Flow28%▆▅▄▇█▅

One of these cans will not spray at all

Poor cheap nozzles making the product impossible to use

it wouldnt spray

Paint Quality16%▇▇▇█▅▃

Stain cover Paint

I was expecting a thick paint

Also not enough paint in the spray

Functionality-Overall14%▆█▇█▇▃

Doesn't work

Not good for felt len

Not working

Leak-Proof10%▁▇▆▃█▆

Water leak through ceiling

It leaked the first time used

Kept bleeding through

Defective Material/Parts5%▆▅▅▄▆█

FAQ

Common Stain Block questions

Answered from the same tracked data.