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black square glasses

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A small market ($19K/yr) — this niche doesn't clear our bar today.

Market size 5Growth 20Conversion 28Competition 84Returns 41Price range 30Avg price 46Brand share 94Review moat 36Quality gap 53

Brand share

Great41%

top-5 brand share — no brand owns this niche

Competition

Great31%

top-5 click share — an open shelf

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Avg price

Okay$11.55

avg listing price — sweet spot $15–$100

Returns

Okay4.1%

return rate — above 6% kills the launch gate

Review moat

Okay2,938.18

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$3.98–$19.82

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

Conversion

Okay2.3%

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

Growth

Bad-11.0%

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

Market size

Bad$19K

$19K/yr · 71K searches

Competition

Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.

Brands

45 rising

Sellers

59

Top-5 brand share

41%

Open market

53%

  • EYLRIM10%
  • GQUEEN9%
  • TYA8%
  • LYZOIT7%
  • hoyuwak7%
  • Sunier5%

Product shelf

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

0%2%$3724%$7456%$1K8%$1K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 67 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -11.0% search growth over the last 90 days.
7K5KSpike '24Prime Day '25Spike '25SepDecMarJunAugNovMarMay

Peak months: Oct, Nov · busiest ÷ quietest = 5.6×

Reviews

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

What buyers love

Quality-Overall19%

“The glasses are of outstanding quality”

Size-Overall14%

“liked the size”

Value For Money11%

“Great value”

Comfort-Overall8%

“Comfortable too”

Shape/Style8%

“Great style”

Advertised Vs Actual Product7%

“As described”

Color4%

“love I have two color options”

Durability3%

“the have not broke”

Weight Light3%

“They feel lightweight on the face”

Strength2%

“Solid purchase”

What buyers complain about

Size-Overall21%

“Too big”

Quality-Overall10%

“Bad quality”

Durability10%

“Broke in a week”

Blue Light Filter6%

“NOT BLUE LIGHT FILTERING GLASSES”

Value For Money6%

“overpriced”

Lenses5%

“However the lens smidge easily”

Functionality-Overall5%

“They do nothing”

Color4%

“Pale yellow”

Strength2%

“not very sturdy”

Material Quality2%

“Cheap material”

Top return reasons

Size-Overall65%
Shape/Style6%
Advertised Vs Actual Product6%
Quality-Overall3%
Functionality-Overall2%
Blue Light Filter2%
Color2%
Value For Money2%
Width2%
Comfort-Overall2%