bloc
Worth a lookShows a sweet-spot price point ($27.57 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible£27.57avg listing price — sweet spot $15–$100
Returns
Great1.2%return rate — above 5% kills the launch gate
Growth
Great+81.3%90-day search growth — must beat 0% to launch
Competition
Great31%top-5 click share — an open shelf
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay2,318.36avg incumbent reviews — the moat a new listing must climb
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Price range
Okay£10.70–£293.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Market size
Bad£36K£36K/yr · 60K searches
According to Flapen's Amazon United Kingdom niche tracking, bloc is a £36K/yr Amazon United Kingdom market (60K searches/yr). The top 5 brands hold 84% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
bloc market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- £28K–£34K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #462
- Page quality
- 0%
- Prime
- 87%
- Sponsored
- 58%
- Out of stock
- 1.0%
- Avg brand age
- 58 months
- Avg seller age
- 163 days
Competition & brand share
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.Brands
17 rising
Sellers
33
Top-5 brand share
84%
Top 20: 100%
Top-5 click share
31%
Top 20: 67%
Open market
12%
- Bloc51%
- ICECUBE15%
- Perfectmiaoxuan8%
- RIVBOS5%
- PUKCLAR5%
- Rayruling4%
- Open — no brand owns it (11 brands, 12%)
Top bloc search terms
- bloc sunglasses mens21K/yr
- bloc sunglasses13K/yr
- bloc17K/yr
- bloc sunglasses uk3K/yr
- bloc sunglasses womens5K/yr
Top bloc 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Bloc Eyewear Womens Capricorn Sunglasses Choc/ Cream F216 One Size
Bloc£28.664.7★122 rev
Bloc Hornet POLARISED Lens Sun Glasses (Black)
Bloc£28.824.6★417 rev
Bloc Eyewear Daytona Sunglasses - Black/Blue Lens
Bloc£28.784.5★347 rev
Rayruling Polarized Sunglasses Men Women Sport Sunglasses Men Black Retro TR90 Ultralight Frame UV400 HD Golf/Driving/Fishing/Travel Glasses/Outdoor Sports Fashion
Rayruling£13.264.5★428 rev
Perfectmiaoxuan 3-Pack Polarised Sunglasses for Men & Women - Lightweight TR90 Retro Frames - UV400 Protection CAT-3 HD Lenses for Driving Fishing & Travel - Unisex Classic Shades
Perfectmiaoxuan£15.704.1★2,583 rev
Newest
by launch dateRayruling Polarized Sunglasses Men Women Sport Sunglasses Men Black Retro TR90 Ultralight Frame UV400 HD Golf/Driving/Fishing/Travel Glasses/Outdoor Sports Fashion
Rayruling£13.26428 rev
Perfectmiaoxuan 3-Pack Polarised Sunglasses for Men & Women - Lightweight TR90 Retro Frames - UV400 Protection CAT-3 HD Lenses for Driving Fishing & Travel - Unisex Classic Shades
Perfectmiaoxuan£15.702,583 rev
Perfectmiaoxuan Polarized sunglasses for men/women; Vintage/classic/elegant light frame; HD pilot lenses; Golf/driving/fishing/travel Eyewear
Perfectmiaoxuan£12.653,924 rev
RIVBOS Mens Polarized Sunglasses TR90 Unbreakable Frame RB831 32-Black Ice Blue Lens M 32-black Ice Blue Lens M
RIVBOS£15.072,287 rev
RIVBOS Sunglasses Men Women Polarized UV400 Cycling Glasses Sports Glasses Cycling Hiking Running Golf and Fishing Driving RB831
RIVBOS£15.082,287 rev
Trending
90-day click momentum
Perfectmiaoxuan Polarized sunglasses for men/women;HD pilot lenses light frame; Golf/driving/fishing/travel Eyewear
Perfectmiaoxuan£14.244.2★
Perfectmiaoxuan 3-Pack Polarised Sunglasses for Men & Women - Lightweight TR90 Retro Frames - UV400 Protection CAT-3 HD Lenses for Driving Fishing & Travel - Unisex Classic Shades
Perfectmiaoxuan£15.704.1★
Rayruling Polarized Sunglasses Men Women Sport Sunglasses Men Black Retro TR90 Ultralight Frame UV400 HD Golf/Driving/Fishing/Travel Glasses/Outdoor Sports Fashion
Rayruling£13.264.5★
Perfectmiaoxuan Polarized sunglasses for men/women; Vintage/classic/elegant light frame; HD pilot lenses; Golf/driving/fishing/travel Eyewear
Perfectmiaoxuan£12.654.2★
RIVBOS Mens Polarized Sunglasses TR90 Unbreakable Frame RB831 32-Black Ice Blue Lens M 32-black Ice Blue Lens M
RIVBOS£15.074.4★
What buyers say about bloc
What buyers praise and complain about, mined from review topics.What buyers love
“not expensive”
“Excellent product”
“He said they make everything clear and comfortable”
“Fit perfectly”
“nice style”
“Works as should”
“Lightweight Sunglasses That Stay Put”
“The design is awesome”
“They are sturdy”
“Great for cycling jogging or driving”
What buyers complain about
“Read the feedback these are poor cheap crap”
“Bad durability”
“flimsy”
“they suddenly felt loose”
“Misleading”
“Rubbish not worth the money looks very cheap as well”
“Would have liked a darker pair in which other colours are available”
“Very plasticky like something you'd buy in a bargain/pound shop”
“They aren't very good the side arm's don't line up making them uncomfortable to wear”
“no ability to adjust”
Top return reasons
Common questions
- Is bloc profitable to sell on Amazon United Kingdom?
- The niche generates £36K/yr across 55 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +81.3%. Flapen's verdict: Worth a look (56/100).
- How competitive is the bloc niche?
- 17 brands and 33 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 84% of demand.
- What do buyers complain about in bloc?
- Top complaints mined from reviews: Quality-Overall, Durability, Strength. The return rate is 1.2%.
- What does it cost to enter the bloc niche?
- Listings span £10.70–£293.26; the average listing price is £27.57 (sweet spot $15–$100). The average incumbent carries 2,318 reviews — the moat a new listing must climb.