Coway · Updated August 2026
Coway Bidetmega 400S Bidet Seat: price & specs
Coway Bidetmega 400S Bidet Seat. Every price and spec below is linked to its source and dated — no guesses.
Source: cowaymega.com verified ✓ corroborated verify in ledger
Price history
$599Is the Coway Bidetmega 400S Bidet Seat a good buy?
At $599, the Coway Bidetmega 400S Bidet Seat is #11 cheapest of the 17 bidet toilet seats we track, where the median is $549. On the spec sheet, its nozzle count of 1 is the lowest of the 17, and its price usd of 599 is above the median of the 17.
Specifications
| Price (US) | $599 Regular price $599.00 on cowaymega.com (Coway's US Bidetmega store). Amazon lists this exact model (Bidetmega 400S(E)) but priced in EUR (€383.10, localized), so US MSRP is taken from the manufacturer's $599.00. |
|---|---|
| Brand | Coway |
| Released | — |
| Price usd | 599 |
| Water heating type | Tankless |
| Nozzle material | Stainless steel |
| Nozzle count | 1 |
| Bowl shape fit | Both |
| Has air dryer | Yes |
| Has deodorizer | No |
| Has night light | Yes |
| Has self cleaning nozzle | Yes |
| Control type | Wireless remote |
| Seat weight capacity (lb) | — |
| Dimensions (in) | 20.9 x 15.3 x 5.31 |
Source: cowaymega.com (verified 2026-07-10) · corroborated by amazon.com. Manufacturer store cowaymega.com confirms this exact model 'Coway Bidetmega 400S' at Regular price $599.00, with a Tankless Water Heating System (instant heated water), 'Stainless steel nozzles', auto cleaning nozzle (self-cleaning), heated seat and dryer, nightlight, an all-new wireless remote, fit for 'both round and elongated toilet bowls', and elongated Dimension (W x H x D) 15.3 x 5.31 x 20.9in — rendered as catalog L×W×H '20.9 x 15.3 x 5.31'. Amazon corroborates the exact identity (Model Number / Manufacturer Part Number 'Bidetmega 400S(E)') and repeats tankless heating, stainless self-cleaning nozzle, heated seat + dryer, nightlight and remote control; Amazon's buybox price is shown in EUR (€383.10, localized) so US MSRP is taken from the manufacturer's $599.00. No deodorizer is listed on either page (Triple Hygiene Care = WaterShield mist + auto-cleaning nozzle + UV light + soft-close lid) so hasDeodorizer=false; the wash uses a single positionable stainless wand (Amazon title 'Stainless Nozzle', descriptions say 'the nozzle') so nozzleCount=1; only product weight (8.5 lb) is published, not seat weight capacity, so seatWeightCapacityLb=null; neither page states a release year, so releaseDate=null.
Is the Coway Bidetmega 400S Bidet Seat worth it vs cheaper bidet toilet seats?
Coway Bidetmega 400S Bidet Seat against its closest cheaper and pricier bidet toilet seats on the specs that matter — every value sourced. See all 17 ranked
| Product | Price | Price usd | Water heating type | Nozzle material | Nozzle count | Bowl shape fit |
|---|---|---|---|---|---|---|
| Coway Bidetmega 400S Bidet Seat this | $599 | 599 | Tankless | Stainless steel | 1 | Both |
| Bio Bidet BB-2000 Bliss | $549 | 549 | — | Stainless steel | 1 | Both |
| TOTO Washlet S7 (SW4726) | $1279 | 1826 | Tankless | Plastic | 1 | Both |
Frequently asked questions
How much does the Coway Bidetmega 400S Bidet Seat cost?
The Coway Bidetmega 400S Bidet Seat has a US price of $599 (Regular price $599.00 on cowaymega.com (Coway's US Bidetmega store). Amazon lists this exact model (Bidetmega 400S(E)) but priced in EUR (€383.10, localized), so US MSRP is taken from the manufacturer's $599.00.), as of 2026-07-10.
How does the Coway Bidetmega 400S Bidet Seat compare on price?
At $599, the Coway Bidetmega 400S Bidet Seat is #11 cheapest of the 17 bidet toilet seats we track, where the median is $549.
Has the Coway Bidetmega 400S Bidet Seat's price changed?
No — the Coway Bidetmega 400S Bidet Seat has held at $599 since 2026-07-25.
What is the lowest price the Coway Bidetmega 400S Bidet Seat has been?
The lowest we have recorded for the Coway Bidetmega 400S Bidet Seat is $388.99 on 2026-08-09.
Is now a good time to buy the Coway Bidetmega 400S Bidet Seat?
The Coway Bidetmega 400S Bidet Seat is currently $599; the lowest we have recorded is $388.99 (2026-08-09). Every price is dated, so you can judge it against its own history.
What are the Coway Bidetmega 400S Bidet Seat's key specs?
Coway Bidetmega 400S Bidet Seat (Coway): priceUsd 599, waterHeatingType Tankless, nozzleMaterial Stainless steel, nozzleCount 1, bowlShapeFit Both. Full sourced spec sheet verified 2026-07-10.
Price of record: $599 at cowaymega.com, 2026-08-31. Other retailers may be lower — check the current price:
Check current price at amazon.com As an Amazon Associate we earn from qualifying purchases.Similar bidet toilet seats
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