Is waterfall sink profitable to sell on Amazon United States?

The niche generates $138K/yr across 45 tracked products. 4 of 10 products launched in the last 360 days are still selling. 90-day search growth is -6.7%. Flapen's verdict: Skip it (44/100).

How competitive is the waterfall sink niche?

23 brands and 24 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 55% of demand.

What do buyers complain about in waterfall sink?

Top complaints mined from reviews: Leak-Proof, Quality-Overall, Assembly/Installation. The return rate is 4.9%.

When does demand for waterfall sink peak?

Demand peaks in Nov–Dec; the busiest month runs 2.7× the quietest.

What does it cost to enter the waterfall sink niche?

Listings span $124.87–$1106.93; the average listing price is $426.04 (sweet spot $15–$100). The average incumbent carries 74 reviews — the moat a new listing must climb.

waterfall sink

Skip it

Prices mostly outside the sweet spot ($124.87–$1106.93) — this niche doesn't clear our bar today.

Review moat

Incredible74.18

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Brand share

Great55%

top-5 brand share — no brand owns this niche

Competition

Great40%

top-5 click share — an open shelf

Market size

Okay$138K

$138K/yr · 162K searches

Returns

Okay4.9%

return rate — above 5% kills the launch gate

Growth

Bad-6.7%

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

Avg price

Bad$426.04

avg listing price — sweet spot $15–$100

Conversion

Bad0.2%

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

Price range

Bad$124.87–$1106.93

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

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, waterfall sink is a $138K/yr Amazon United States market (162K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 44/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

waterfall sink market data

Units sold / yr: 250–500; avg 0–100/product
Revenue / yr: $107K–$213K; units × avg price
Conversion rate: 0.2%
Avg BSR: #545
Page quality: 0%
Prime: 71%
Sponsored: 93%
Out of stock: 14.8%
Avg brand age: 28 months
Avg seller age: 175 days

Competition & brand share

Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.

Brands

23 rising

Sellers

Top-5 brand share

55%

Top 20: 98%

Top-5 click share

40%

Top 20: 75%

Open market

38%

Lefton21%
OROMVO10%
Cuixoc9%
FIVIXIL7%
Logmey7%
Kunoqi7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.7% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 2.7×

Open Trend

Top waterfall sink search terms

smart sink34K/yr -2.0%0.2% conv.
lefton kitchen sink20K/yr +41.2%0.2% conv.
smart kitchen sink32K/yr -29.9%0.2% conv.
smart sink kitchen23K/yr -25.9%0.1% conv.
lefton sink11K/yr +15.0%0.2% conv.
kitchen sink with cup washer13K/yr -14.0%0.1% conv.
sink with cup washer9K/yr -1.0%0.0% conv.
boelon luxury kitchen sink10K/yr -12.3%0.1% conv.
fancy kitchen sink3K/yr +8.7%0.0% conv.
multifunctional sink3K/yr -25.7%0.2% conv.

All search terms

Top waterfall sink 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Lefton 33x22 Stainless Steel Waterfall Kitchen Sink with Temperature Display in Fahrenheit KS2207L-PRO (Grey 33 x 22)

Lefton$822.553.2★5 rev

OROMVO Smart Waterfall Kitchen Sink 31.5x17.7 Drop In Stainless Steel

OROMVO$176.513.8★25 rev

FIVIXIL Kitchen sink double waterfall sink with LED display with cup washer soap dispenser waterfall mixer worktop controller etc. workstation kitchen sink (Gun grey 33.5 * 18.1 * 8.7 IN)

FIVIXIL$338.303.6★97 rev

Kunoqi 33x22 Inch Smart Waterfal Kitchen Sink Workstation Gunmetal Black Drop-In Sink Handmade 16 Gauge Stainless Steel Single Bowl

Kunoqi$464.314.1★31 rev

Cuixoc Stainless Steel Smart Sink With Digital Display 29 * 18 inch Waterfall Kitchen Sink Drop In Workstation Large Single Bowl with Pull-Out Faucet & Multiple Accessories

Cuixoc$196.413.7★40 rev

Newest

by launch date

OROMVO Smart Waterfall Kitchen Sink 31.5x17.7 Drop In Stainless Steel

OROMVO$176.5125 rev

5mo ago

33x22 Inch Drop In Workstation Kitchen Sink - Multifunction 16 Gauge Stainless Steel Kitchen Sinks Smart Digital Display Waterfall Chef Sinks with Pull-down Faucet & Multiple Accessories

Voriva$372.3227 rev

9mo ago

Cuixoc Stainless Steel Smart Sink With Digital Display 31.5 * 17.7 inch Waterfall Kitchen Sinks Drop In Workstation Large Single Bowl with Pull-Out Faucet & Multiple Accessories

Cuixoc$206.7640 rev

9mo ago

Lefton New 33x22 Stainless Steel Waterfall Kitchen Sink with Temperature Display in Fahrenheit KS2207L-PRO (Grey 33x22 (w/ 1 HP Garbage Disposal))

Lefton$1106.933 rev

10mo ago

Lefton 33x22 Stainless Steel Waterfall Kitchen Sink with Temperature Display in Fahrenheit KS2207L-PRO (Grey 33 x 22)

Lefton$822.555 rev

10mo ago

What buyers say about waterfall sink

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

What buyers love

Quality-Overall16%

“Great quality, easy to assemble”

Assembly/Installation16%

“Easy installation”

Value For Money8%

“Reasonable price”

Design-Overall8%

“Looks great”

Size-Overall7%

“Fits perfect”

Ease Of Cleaning7%

“easy to clean”

Ease Of Use4%

“easy to use”

Strength3%

“It looks and fell solid”

Durability3%

“durable”

Advertised Vs Actual Product2%

“Better than I thought”

What buyers complain about

Leak-Proof17%

“Switches might leak”

Quality-Overall12%

“BAD QUALITY”

Assembly/Installation8%

“The installation instructions are TERRIBLE & very vague”

Instructions/User Manual/Troubleshooting6%

“Difficult instructions,”

Size-Overall5%

“Return it back, didn't fit”

Material Quality4%

“CHEAP MATERIALS”

Add-Ons/Attachments2%

“button with no way to attach it”

Drainage2%

“Terrible plumbing”

Value For Money2%

“Not worth the price tag -Disappointed”

Rusts/Corrodes2%

“Now Less than two months later the surfaces of those buttons have corroded”

Top return reasons

Size-Overall50%

Defective Material/Parts8%

Leak-Proof7%

Advertised Vs Actual Product6%

Quality-Overall4%

Functionality-Overall4%

Compatibility-Overall3%

Color3%

Material Quality2%