Is heavy duty shower curtain liner profitable to sell on Amazon United States?

The niche generates $529K/yr across 13 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -1.9%. Flapen's verdict: Skip it (41/100).

How competitive is the heavy duty shower curtain liner niche?

9 brands and 16 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in heavy duty shower curtain liner?

Top complaints mined from reviews: Thickness, Quality-Overall, Magnetic Strength/Adsorption. The return rate is 1.0%.

When does demand for heavy duty shower curtain liner peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the heavy duty shower curtain liner niche?

Listings span $4.54–$16.94; the average listing price is $11.09 (sweet spot $15–$100). The average incumbent carries 77,977 reviews — the moat a new listing must climb.

heavy duty shower curtain liner

Skip it

A deep review moat (77,977 avg reviews) — this niche doesn't clear our bar today.

Returns

Incredible1.0%

return rate — above 5% kills the launch gate

Conversion

Great9.2%

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

Market size

Good$529K

$529K/yr · 519K searches

Avg price

Okay$11.09

avg listing price — sweet spot $15–$100

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-1.9%

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

Competition

Bad76%

top-5 click share — a locked-up shelf

Brand share

Bad92%

top-5 brand share — brand-locked demand

Price range

Bad$4.54–$16.94

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

Review moat

Bad77,976.85

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, heavy duty shower curtain liner is a $529K/yr Amazon United States market (519K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 41/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

heavy duty shower curtain liner market data

Units sold / yr: 50K–60K; avg 3,000–4,000/product
Revenue / yr: $555K–$665K; units × avg price
Conversion rate: 9.2%
Avg BSR: #8
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 177 days

Competition & brand share

The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 flat

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

AmazerBath39%
Barossa Design28%
LiBa12%
BigFoot7%
Rubbermaid6%
downluxe3%
Open — no brand owns it (3 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top heavy duty shower curtain liner search terms

heavy duty shower curtain liner189K/yr -1.1%8.0% conv.
heavy shower curtain liner55K/yr +0.7%8.2% conv.
shower curtain liner heavy duty51K/yr -13.6%8.7% conv.
heavy duty shower liner32K/yr -0.2%6.2% conv.
shower liner heavy duty20K/yr +3.2%7.1% conv.
thick shower curtain liner20K/yr -9.3%6.5% conv.
heavy weight shower curtain liners19K/yr -0.1%6.8% conv.
heavy duty clear shower curtain16K/yr -3.1%7.3% conv.
heavyweight shower curtain liner12K/yr -11.0%6.2% conv.
heavy shower curtain liner weighted14K/yr -3.8%5.0% conv.

All search terms

Top heavy duty shower curtain liner 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 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

AmazerBath Plastic Shower Curtain Clear Premium PEVA Clear Shower Curtain Heavy Duty 8G Weighted Shower Curtains for Bathroom Accessories with 3 Big Stones and 12 Rustproof Grommets 72x72 Inches

AmazerBath$9.494.6★92,008 rev

Barossa Design Shower Curtain Liner with 6 Magnets - Heavy Duty PEVA Plastic Shower Curtain for Bathroom Waterproof Vinyl & See Through Bath Liner Metal Grommets - Clear 72x72

Barossa Design$9.934.5★97,767 rev

AmazerBath Heavy Duty Shower Curtain Liner 12 Gauge 72 x 72 Inches Clear Shower Curtain Liner with 3 Clear Stones and 12 Grommet Holes Weighted Plastic Shower Liner

AmazerBath$16.784.7★10,764 rev

BigFoot Clear Shower Curtain - 72x72 Odorless Plastic with Magnets Washable Long Bathroom Curtain - Premium PEVA Waterproof Bath Curtain Rust-Proof Bathroom Essentials

BigFoot$10.004.5★57,872 rev

LiBa Bathroom Shower Curtain - Waterproof Plastic Shower Curtain Premium PEVA Non-Toxic with Rust Proof Grommets 10G Heavy Duty Bathroom Accessories 72x72

LiBa$11.914.5★257,571 rev

Newest

by launch date

Rubbermaid Frosty Shower Curtain Liner Waterproof Heavyweight 8g PEVA Shower Liner for Bathroom with Weighted Magnets and Rustproof Charcoal Gray Grommets 70x72 Standard Size Frosty

Rubbermaid$13.48373 rev

8mo ago

Rubbermaid White Shower Curtain Liner Waterproof Heavyweight 8g PEVA Shower Liner for Bathroom with Weighted Magnets and Rustproof Black Grommets 70x72 Standard Size White

Rubbermaid$12.34373 rev

8mo ago

Barossa Design Extra Heavy Duty Shower Curtain Liner Thick - Soft Plastic Shower Liner Waterproof with Grommets & 3 Magnets Clear 72x72

Barossa Design$16.9497,767 rev

2y ago

EHZNZIE Crystal Clear Shower Curtain Liner 72x72 PEVA Waterproof Bath Curtain No Chemical Smell 3 Weighted Magnets Durable with Rustproof Metal Grommets

EHZNZIE$4.5427,726 rev

5y ago

Mrs Awesome Clear Shower Curtain Liner with 3 Magnets 72x72 Premium Flexible Sturdy Plastic Shower Curtain for Bathroom Lightweight Waterproof Clear

Mrs Awesome$4.8633,363 rev

5y ago

What buyers say about heavy duty shower curtain liner

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

What buyers love

Quality-Overall22%

“Good product and item was as expected”

Value For Money12%

“Great deal”

Advertised Vs Actual Product10%

“As Described”

Size-Overall5%

“as described, perfect fit”

Thickness4%

“Nice thickness”

Weight Heavy4%

“Nice and heavy”

Weight Light4%

“Nice and lightweight”

Magnetic Strength/Adsorption3%

“Not flimsy and the magnets worked well”

Efficiency3%

“Works great does the job”

Durability3%

“its holding up very well”

What buyers complain about

Thickness21%

“Not very thick”

Quality-Overall10%

“Bad quality”

Magnetic Strength/Adsorption7%

“Magnets are not very strong”

Thin5%

“Kinda thin with magnets”

Weight Heavy5%

“A tad heavier than needed”

Strength4%

“flimsy plastic”

Size-Overall4%

“Too short”

Material Quality4%

“Cheap material”

Weight Light4%

“Too lightweight”

Durability2%

“Not durable”

Top return reasons

Size-Overall38%

Thin12%

Material Quality9%

Advertised Vs Actual Product7%

Quality-Overall6%

Value For Money5%