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frosted shower curtain liner

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A deep review moat (86,008 avg reviews) — this niche doesn't clear our bar today.

Market size 21Growth 38Conversion 91Competition 11Returns 89Price range 24Avg price 25Brand share 24Review moat 0Quality gap 42

Conversion

Great11.0%

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

Returns

Great1.3%

return rate — above 6% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+10.1%

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

Avg price

Okay$8.88

avg listing price — sweet spot $15–$100

Brand share

Bad90%

top-5 brand share — brand-locked demand

Price range

Bad$5.65–$17.98

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

Market size

Bad$84K

$84K/yr · 85K searches

Competition

Bad87%

top-5 click share — a locked-up shelf

Review moat

Bad86,008.11

avg incumbent reviews — the moat a new listing must climb

Competition

The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

10

Top-5 brand share

90%

Open market

3%

  • AmazerBath49%
  • LiBa17%
  • Barossa Design9%
  • EHZNZIE9%
  • ZENO8%
  • downluxe7%
  • Open — no brand owns it (1 brand, 3%)

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%15%$13K30%$25K45%$38K60%$50K1001K10K100K1.0M Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 9 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 97 weeks — +10.1% search growth over the last 90 days.
2K2KPrime Day '24Spike '24Prime Day '25Spike '25Spike '26DecMarJunAugNovMarMay

Peak months: Oct · busiest ÷ quietest = 1.7×

Reviews

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

What buyers love

Quality-Overall21%

“Very well made”

Advertised Vs Actual Product16%

“Exactly as described”

Value For Money11%

“Great value”

Size-Overall6%

“Fits right”

Magnetic Strength/Adsorption5%

“I like the magnetic part so it sticks to the tub wall”

Strength5%

“Overall this curtain is sturdy”

Thickness4%

“Not thin amd flimsy at all”

Weight Light3%

“lightweight”

Durability3%

“Very durable”

Upholstery/Fabric Quality3%

“Decent curtain”

What buyers complain about

Thickness36%

“Not as thick as I hoped”

Magnetic Strength/Adsorption7%

“Magnets don't work”

Durability7%

“It didn't last me”

Weight Heavy6%

“Not as heavy as I thought it would be”

Quality-Overall6%

“Super thin low quality”

Thin4%

“Super thin”

Advertised Vs Actual Product3%

“This is false advertising”

Size-Overall3%

“Wrong size after ordering multiple times”

Weight Light3%

“Apparently the weights on the bottom are not heavy enough to help”

Value For Money3%

“Cheap $ so will try again to find a better source”

Top return reasons

Size-Overall34%
Thin15%
Material Quality8%
Advertised Vs Actual Product7%
Value For Money5%
Quality-Overall5%
Weight Heavy5%
Color4%
Magnetic Strength/Adsorption3%
Thickness3%