Is toilet flapper profitable to sell on Amazon United States?

The niche generates $2.3M/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +8.5%. Flapen's verdict: Skip it (46/100).

How competitive is the toilet flapper niche?

6 brands and 77 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 97% of demand.

What do buyers complain about in toilet flapper?

Top complaints mined from reviews: Leak-Proof, Size-Overall, Functionality-Overall. The return rate is 3.5%.

When does demand for toilet flapper peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the toilet flapper niche?

Listings span $6.91–$16.60; the average listing price is $10.54 (sweet spot $15–$100). The average incumbent carries 3,381 reviews — the moat a new listing must climb.

toilet flapper

Skip it

Brand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible16.8%

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

Market size

Incredible$2.3M

$2.3M/yr · 1.3M searches

Returns

Okay3.5%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Avg price

Okay$10.54

avg listing price — sweet spot $15–$100

Growth

Okay+8.5%

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

Review moat

Okay3,381.09

avg incumbent reviews — the moat a new listing must climb

Competition

Bad79%

top-5 click share — a locked-up shelf

Price range

Bad$6.91–$16.60

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

Brand share

Bad97%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, toilet flapper is a $2.3M/yr Amazon United States market (1.3M searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 46/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

toilet flapper market data

Units sold / yr: 200K–250K; avg 15,000–20,000/product
Revenue / yr: $2.1M–$2.6M; units × avg price
Conversion rate: 16.8%
Avg BSR: #230
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 0.0%
Avg brand age: 42 months
Avg seller age: 133 days

Competition & brand share

The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 rising

Sellers

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

79%

Top 20: 100%

Open market

Korky70%
Fluidmaster11%
Lydia's Deal8%
WINONLY4%
HEAVSTRET4%
Forynade3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +8.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top toilet flapper search terms

toilet flapper553K/yr +7.4%14.0% conv.
toilet flapper replacement kit256K/yr -0.0%14.2% conv.
flapper for toilet tank45K/yr +39.5%12.6% conv.
american standard toilet flapper69K/yr +0.1%1.9% conv.
toilet flapper replacement43K/yr +33.0%10.5% conv.
korky toilet flapper48K/yr +11.5%15.3% conv.
toilet flapper 2 inch33K/yr +1.1%14.1% conv.
toilet flappers32K/yr -2.7%7.9% conv.
toilet tank flapper26K/yr +26.8%11.0% conv.
toilet stopper flapper31K/yr -7.7%14.2% conv.

All search terms

Top toilet flapper 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 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Korky Ultra Standard 2-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA 100BP

Korky$6.914.5★15,115 rev

Korky Large 3-Inch Premium Universal Toilet Flapper

Korky$11.754.5★4,165 rev

2 Pack 2-Inch Toilet Flapper Replacement Kit Fix Running Toilets & Ghost Flushing Fits Most 2 Flush Valves (NOT 3) Compatible with Kohler TOTO & American Standard Durable Rubber Seal Red

Lydia's Deal$7.564.5★1,262 rev

Korky Ultra Standard 2-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA 100BP (2 Pack)

Korky$13.114.6★990 rev

Fluidmaster 502CN3 PerforMAX Universal Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves Adjustable Solid Frame Design Easy Install 3 Pack Red 3 Pack

Fluidmaster$11.804.6★1,413 rev

Newest

by launch date

2 Pack Toilet Flapper Replacement Kit 2 Inch Universal Toilet Tank Flapper Fit for Kohler American Standard Toto Gerber Silicone Stopper Flapper with Stainless Steel Chain Easy to Install (2)

HEAVSTRET$9.8874 rev

4mo ago

Universal Toilet Flapper Replacement Kit: 2 Inch Toilet Tank Flapper 2 Stainless Chains Designed for American Standard Kohler Toto Gerber Toilet Stopper Water Saving Easy to Install Heavy Duty Rubber

Forynade$8.14516 rev

1y ago

Universal Toilet Flapper Replacement 2 Inch - Compatible with Most American Standard Kohler Fluidmaster Toto Gerber Toilets Tank Water Saving Rubber Flush Valve Flapper with Stainless Chain Blue 1Pack

WINONLY$8.851,201 rev

2y ago

2 Pack 2-Inch Toilet Flapper Replacement Kit Fix Running Toilets & Ghost Flushing Fits Most 2 Flush Valves (NOT 3) Compatible with Kohler TOTO & American Standard Durable Rubber Seal Red

Lydia's Deal$7.561,262 rev

3y ago

Korky Ultra Standard 2-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA 100BP (2 Pack)

Korky$13.11990 rev

4y ago

What buyers say about toilet flapper

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

What buyers love

Assembly/Installation22%

“Took 1 minute to install”

Quality-Overall12%

“Came as expected good quality”

Size-Overall11%

“Fit perfect”

Advertised Vs Actual Product9%

“As advertised”

Value For Money9%

“good value”

Efficiency7%

“works great”

Leak-Proof5%

“Does not leak”

Ease Of Use4%

“Easy to replace”

Durability3%

“it seems durable”

Maintenance And Repair2%

“Great to have replacements”

What buyers complain about

Leak-Proof20%

“It leaked”

Size-Overall15%

“TOO SMALL”

Functionality-Overall8%

“Not likely to work”

Durability6%

“Broke in a couple months time”

Quality-Overall5%

“Not the best quality product inexpensive though”

Assembly/Installation4%

“Didnt get a chance to install it yet”

Noise Level2%

“VERY loud whistling every time the toilet is refilling”

Value For Money2%

“I expected slightly better performance for the price”

Drainage2%

“It took some time to drain all waters from tank”

Ease Of Use2%

“It opens and closes”

Top return reasons

Size-Overall81%

Compatibility-Overall4%

Advertised Vs Actual Product3%

Defective Material/Parts3%

Leak-Proof2%

Functionality-Overall2%

Value For Money1%

Material Quality1%

Product Condition1%

Maintenance And Repair1%

Common questions

Is toilet flapper profitable to sell on Amazon United States?: The niche generates $2.3M/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +8.5%. Flapen's verdict: Skip it (46/100).
How competitive is the toilet flapper niche?: 6 brands and 77 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 97% of demand.
What do buyers complain about in toilet flapper?: Top complaints mined from reviews: Leak-Proof, Size-Overall, Functionality-Overall. The return rate is 3.5%.
When does demand for toilet flapper peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the toilet flapper niche?: Listings span $6.91–$16.60; the average listing price is $10.54 (sweet spot $15–$100). The average incumbent carries 3,381 reviews — the moat a new listing must climb.