One Piece Toilet Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
One Piece Toilet sales on Amazon US totaled 6,150 units in July 2026 (▼ 9.6% vs. the prior month), generating an estimated $1,961,646 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 81.3% of unit volume and 74.9% of revenue, while a typical listing is priced at $485.55. The keyword itself pulled 5,287 Amazon queries over the same period (▼ 37.9% MoM).
Zooming out to the 12-month window ending July 2026, the one piece toilet Top 50 moved 52,850 units and $18,316,272 in cumulative sales — an average of 4,404 units and $1,526,356 per month. Monthly throughput topped out at 6,800 units in June 2026 and dipped to 2,850 in May 2026, leaving the latest reading 92.2% higher than August 2025.
One Piece Toilet Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
6.2K
▼ 9.6% MoM
Monthly Revenue 2026/07
$2M
▼ 14.9% MoM
Top 10 Market Share 2026/07
81.3%
One Piece Toilet Market Share & Sales Concentration on Amazon US — July 2026
The most-sold one piece toilet listing on Amazon US in July 2026 is ASIN B0FCTR1Y75 (Brand: TOTO), which sold 2,000 units at $420.00 apiece — equal to 32.5% of every unit tracked in this report and 2.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 5,000 units and $1,468,512 in July 2026 — 81.3% of unit volume and 74.9% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'One Piece Toilet' on Amazon
July 2026
Is 81.3% Top 10 share highly concentrated?
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Top 5 Volume Share breakdown
B0FCTR1Y75
TOTO® WASHLET® S2 Electronic Bidet Toilet Seat with Instantaneous Water Heating, PREMIST and EWATER+ Wand Cleaning, Elongated, Cotton White - SW3346#01
2K
▲ 0.0%vs. prior month
$714.6K
latest month
12-month trend
B0C8BFFGFW
SEAFLO RV Toilet – 18.4" Residential Height, Gravity Flush Foot Pedal, 4-Year Warranty, Fits Most RVs (9.5" Rough-In), Soft Close Seat, 2-Bolt Mount, for Camper Travel Trailer Motorhome SFRTPH-01-01
1K
▲ 0.0%vs. prior month
$158.1K
latest month
12-month trend
B09WYQCPMP
HOROW T0338W One Piece Toilet with ADA Chair Height 17.3", Dual Flush | Powerful MAP 1000g Flush, Dual Flush 1.1/1.6 GPF, Compact Skirted Design, Elongated Bowl, Easy Clean, White, 12" Rough-In
500
▲ 0.0%vs. prior month
$117.9K
latest month
12-month trend
B0G5P9FMXY
Casta Diva One Piece Toilet Elongated with 17.5" ADA Height Comfort Seat | Compact Modern Toilets for Bathroom, Dual Flush High Efficiency 1.0/1.28 GPF, MAP 1000g,Chair Height, 12'' Rough-in, White
400
▲ 100.0%vs. prior month
$95.9K
latest month
12-month trend
B0GWD28JTJ
Casta Diva Elongated One Piece Toilet with 17.2" ADA Comfort Height Seat | Modern Toilet for Bathroom, 1.0GPF Button & Foot Kick Flush, Air Pressure Assisted Flush, 12'' Rough-in, Standard White Bowl
300
▼ 25.0%vs. prior month
$80.3K
latest month
12-month trend
B0CGXMCZF1
LOUPUSUO Smart Toilet with Bidet Built In with Warm Water Sprayer and Dryer | Foot Sensor Operation,Heated Seat toilet with LED Display for Bathroom,Auto Dual Flush
200
▼ 33.3%vs. prior month
$76K
latest month
12-month trend
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Best One Piece Toilet Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
TOTO is the best-performing one piece toilet brand in July 2026, moving 2,000 units across 1 ASIN for 40.0% of Top 10 volume. CASTA DIVA follows with 1,100 units (22.0%), ahead of SEAFLO on 1,000 units (20.0%).
With 6 brands splitting the Top 10 and 82.0% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $150.08 to $420.00, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
TOTO
1 ASIN in Top 10
40.0%
Units
2K
Revenue
$714.6K
Avg. price
$420.00
B0FCTR1Y75
$420.00·★4.5·377 revsTOTO® WASHLET® S2 Electronic Bidet Toilet Seat with Instantaneous Water Heating, PREMIST and EWATER+ Wand Cleaning, Elongated, Cotton White - SW3346#01
Units sold2K
CASTA DIVA
4 ASINs in Top 10
22.0%
Units
1.1K
Revenue
$277.4K
Avg. price
$250.67
B0G5P9FMXY
$289.99·★4.3·108 revsCasta Diva One Piece Toilet Elongated with 17.5" ADA Height Comfort Seat | Compact Modern Toilets for Bathroom, Dual Flush High Efficiency 1.0/1.28 GPF, MAP 1000g,Chair Height, 12'' Rough-in, White
Units sold400B0GWD28JTJ
$236.99·★4.5·65 revsCasta Diva Elongated One Piece Toilet with 17.2" ADA Comfort Height Seat | Modern Toilet for Bathroom, 1.0GPF Button & Foot Kick Flush, Air Pressure Assisted Flush, 12'' Rough-in, Standard White Bowl
Units sold300B0DQDBB37S
$225.70·★4.4·357 revsCasta Diva Elongated One Piece Toilet with 17" Comfort Chair Height Seat | Compact Toilet for Bathroom, Dual Flush 1.1/1.6GPF, 12'' Rough-in, High Efficiency Flush, Standard White Bowl
Units sold200B0GY3XF8YF
$249.99·★4.3·108 revsCasta Diva One Piece Toilet Elongated with 17.5" Height Comfort Seat, Gold | Compact Modern Toilets for Bathroom, Dual Flush High Efficiency 1.0/1.28 GPF, MAP 1000g,Chair Height, 12'' Rough-in, White
Units sold200
SEAFLO
1 ASIN in Top 10
20.0%
Units
1K
Revenue
$158.1K
Avg. price
$150.08
B0C8BFFGFW
$150.08·★4.6·1.6K revsSEAFLO RV Toilet – 18.4" Residential Height, Gravity Flush Foot Pedal, 4-Year Warranty, Fits Most RVs (9.5" Rough-In), Soft Close Seat, 2-Bolt Mount, for Camper Travel Trailer Motorhome SFRTPH-01-01
Units sold1K
Trending One Piece Toilet Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0GY3XF8YF booked 200 units at $249.99, with ▲ 100.0% MoM change. On the growth side, B0G5P9FMXY leads positive momentum with ▲ 100.0% MoM growth on 400 units, with B0F7KVMKQK close behind at ▲ 100.0% MoM on 100 units.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B0GY3XF8YF
Casta Diva One Piece Toilet Elongated with 17.5" Height Comfort Seat, Gold | Compact Modern Toilets for Bathroom, Dual Flush High Efficiency 1.0/1.28 GPF, MAP 1000g,Chair Height, 12'' Rough-in, White
Price
$249.99
Rating
4.3
Reviews
108
Latest month sales
B0G5P9FMXY
Casta Diva One Piece Toilet Elongated with 17.5" ADA Height Comfort Seat | Compact Modern Toilets for Bathroom, Dual Flush High Efficiency 1.0/1.28 GPF, MAP 1000g,Chair Height, 12'' Rough-in, White
Price
$289.99
Rating
4.3
Reviews
108
Latest month sales
B0F7KVMKQK
Smart Toilet with Bidet Built In, One Piece Bidet Toilet with Auto Dual Flush, Foam Shield, Modern Elongated Tankless Toilet with Foot Sensor, Heated Bidet Seat, Warm Water & Dryer,LED Display
Unlock to view ASIN details and product titles
Price
$399.99
Rating
4.4
Reviews
104
Latest month sales
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