Is block blitz profitable to sell on Amazon United Kingdom?

The niche generates £67K/yr across 7 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -27.8%. Flapen's verdict: Skip it (44/100).

How competitive is the block blitz niche?

2 brands and 14 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in block blitz?

Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Ease Of Use, Functionality-Overall. The return rate is 0.0%.

What does it cost to enter the block blitz niche?

Listings span £10.27–£33.33; the average listing price is £19.59 (sweet spot $15–$100). The average incumbent carries 312 reviews — the moat a new listing must climb.

block blitz

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great11.4%

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

Avg price

Great£19.59

avg listing price — sweet spot $15–$100

Review moat

Great312.43

avg incumbent reviews — the moat a new listing must climb

Price range

Great£10.27–£33.33

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

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Market size

Bad£67K

£67K/yr · 30K searches

Growth

Bad-27.8%

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

Competition

Bad89%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Out of Stock

According to Flapen's Amazon United Kingdom niche tracking, block blitz is a £67K/yr Amazon United Kingdom market (30K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 44/100.

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

block blitz market data

Units sold / yr: 3K–3K; avg 250–500/product
Revenue / yr: £49K–£59K; units × avg price
Conversion rate: 11.4%
Avg BSR: #122
Page quality: 0%
Prime: 29%
Sponsored: 57%
Out of stock: 20.5%
Avg brand age: 61 months
Avg seller age: 185 days

Competition & brand share

The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 rising

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

89%

Top 20: 100%

Open market

Block Blitz79%
DTD QUALITY MATTERS21%
Open — no brand owns it (0%)

Demand

Weekly Amazon search volume, last 19 weeks — -27.8% search growth over the last 90 days.

Open Trend

Top block blitz 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

Top sellers

by 90-day click share

Block Blitz Block Paving Eco Cleaner. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. 6 x Pouches. Treats 30 sq/m.

Block Blitz£19.684.5★282 rev

Block Blitz Block Paving Eco Cleaner. 8x 390g Pouches. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. Treats 120 sq/m.

Block Blitz£25.644.3★956 rev

Block Blitz Block Paving Eco Cleaner Treatment: 10 x 390g Pouches Removes and Prevents Algae Moss Black Spot and Weed Growth on 150 Sq/m of Paving

Block Blitz£33.334.5★298 rev

BB Block Blitz Original Eco Block Paving & Patio Decking Cleaner Weed Moss & Algae Remover Sachets Biodegradable Outdoor Cleaner (Pack 1 (2 sachets))

DTD QUALITY MATTERS£10.274.2★13 rev

Block Blitz Block Paving Eco Cleaner. 4x 390g Pouches. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. Treats 60 sq/m.

Block Blitz£15.684.2★305 rev

Newest

by launch date

BB Block Blitz Original Eco Block Paving & Patio Decking Cleaner Weed Moss & Algae Remover Sachets Biodegradable Outdoor Cleaner (Pack 1 (2 sachets))

DTD QUALITY MATTERS£10.2713 rev

7mo ago

BB Block Blitz Original Eco Block Paving & Patio Decking Cleaner Weed Moss & Algae Remover Sachets Biodegradable Outdoor Cleaner Pack of 2 (4 Sachets)

DTD QUALITY MATTERS£16.1613 rev

7mo ago

Block Blitz Block Paving Eco Cleaner. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. 6 x Pouches. Treats 30 sq/m.

Block Blitz£19.68282 rev

1y ago

Block Blitz Block Paving Eco Cleaner. 8x 390g Pouches. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. Treats 120 sq/m.

Block Blitz£25.64956 rev

5y ago

Block Blitz Block Paving Eco Cleaner. 4x 390g Pouches. Removes and Prevents Algae Moss and Black Spot. Deters Weed Growth for up to 6 Months. Treats 60 sq/m.

Block Blitz£15.68305 rev

5y ago

What buyers say about block blitz

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

What buyers love

Ease Of Use24%

“Easy to use”

Efficiency18%

“Used previous does the job properly”

Advertised Vs Actual Product18%

“Does everything it says”

Ease Of Cleaning17%

“Patio cleaner”

Quality-Overall11%

“Excellent product”

Value For Money4%

“Value for money”

Eco Friendliness3%

“Good block cleaner and eco friendly”

Recycle/Reuse3%

“Product is brilliant needs redoing every 6 months though”

Instructions/User Manual/Troubleshooting1%

“I followed the instructions clearly”

What buyers complain about

Instructions/User Manual/Troubleshooting25%

“However, followed instructions to the letter & made no difference to my drive & patio whatsoever”

Ease Of Use25%

“Be careful when opening”

Functionality-Overall25%

“did not do a very good job on my very old slabs”

Value For Money8%

“Its a lot of money to spend to make something look worse”

Color8%

“Why has this turned my white stones a dirty brown”

Top return reasons

Leak-Proof21%

Functionality-Overall21%

Product Condition14%

Defective Material/Parts14%

Quality-Overall14%

Color7%

Maintenance And Repair7%

Common questions

Is block blitz profitable to sell on Amazon United Kingdom?: The niche generates £67K/yr across 7 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -27.8%. Flapen's verdict: Skip it (44/100).
How competitive is the block blitz niche?: 2 brands and 14 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in block blitz?: Top complaints mined from reviews: Instructions/User Manual/Troubleshooting, Ease Of Use, Functionality-Overall. The return rate is 0.0%.
What does it cost to enter the block blitz niche?: Listings span £10.27–£33.33; the average listing price is £19.59 (sweet spot $15–$100). The average incumbent carries 312 reviews — the moat a new listing must climb.