IRobot
Roomba® Plus 405 Combo robot + AutoWash dock | Black
Style code G185020
from $399.99
2 retailers compared · Verified Oct 11, 07:13 UTC
Every price we track
Sylvane Lowest of 2 retailers
Verified Oct 11, 07:13 UTC
iRobot
Verified Oct 11, 07:15 UTC
Ranked by price. Nothing else.
About this item
IRobot Roomba® Plus 405 Combo robot + AutoWash dock | Black is tracked at 2 US retailers in our home & garden index. Retailer listings are matched on style code G185020, so every price below is for this exact item.
The lowest live price we hold is $399.99 at Sylvane; the highest is $799.99 at iRobot — a difference of $400.00, or 50% of the higher figure, for the same item. At $399.99 it sits in the $250.00 to $500.00 band, about 4 times the $109.99 median across the 3,336 home & garden items we currently track. Sylvane shows it reduced from $799.99 to $399.99, a 50% cut against that retailer's own stated full price rather than against any estimate of what the item is worth. Both listings report in stock. Lowest price: verified Oct 11, 07:13 UTC. The retailer's checkout price is always the one that governs what you pay.
Written from the retailer listings we track, not from retailer marketing copy.
Price history
| Date | Retailer | Price |
|---|---|---|
| 2026-10-11 | iRobot | $799.99 |
| 2026-10-11 | Sylvane | $399.99 |
| 2026-10-10 | iRobot | $799.99 |
| 2026-10-10 | Sylvane | $399.99 |
| 2026-10-09 | iRobot | $799.99 |
| 2026-10-09 | Sylvane | $399.99 |
| 2026-10-08 | iRobot | $799.99 |
| 2026-10-08 | Sylvane | $399.99 |
| 2026-10-07 | iRobot | $799.99 |
| 2026-10-07 | Sylvane | $399.99 |
| 2026-10-06 | iRobot | $799.99 |
| 2026-10-06 | Sylvane | $399.99 |
| 2026-10-05 | iRobot | $799.99 |
| 2026-10-05 | Sylvane | $399.99 |
| 2026-10-03 | iRobot | $799.99 |
| 2026-10-03 | Sylvane | $399.99 |
| 2026-10-02 | iRobot | $799.99 |
| 2026-10-02 | Sylvane | $399.99 |
| 2026-10-01 | iRobot | $799.99 |
| 2026-10-01 | Sylvane | $399.99 |
| 2026-09-30 | iRobot | $799.99 |
| 2026-09-30 | Sylvane | $399.99 |
| 2026-09-29 | iRobot | $799.99 |
| 2026-09-29 | Sylvane | $399.99 |
| 2026-09-28 | iRobot | $799.99 |
| 2026-09-28 | Sylvane | $399.99 |
| 2026-09-27 | iRobot | $799.99 |
| 2026-09-27 | Sylvane | $399.99 |
| 2026-09-26 | iRobot | $799.99 |
| 2026-09-26 | Sylvane | $399.99 |
Tracking since 2026-09-26.
Before you buy
Confirm the exact set contents
Piece counts for the same product line differ between retailers. A cheaper set is sometimes a smaller set.
Measure before ordering large items
Returns on bulky home goods are the most expensive returns there are, and often carry a restocking fee.
Common questions
Where is IRobot Roomba® Plus 405 Combo robot + AutoWash dock | Black cheapest?
Of the 2 retailers we track carrying it, Sylvane is lowest at $399.99, and iRobot is highest at $799.99 — a $400.00 difference on the same item. Both figures were verified on or before October 11, 2026.
Is this price a real discount?
Sylvane lists it at $399.99 against its own stated full price of $799.99, a 50% cut. That comparison is the retailer's own full price, not an estimate of what the item is worth.
How current is this price?
The lowest price shown was confirmed verified oct 11, 07:13 utc. We read prices from each retailer's own product feed and publish the date beside every figure. The retailer's checkout price is always the one that governs what you pay.
Price-drop alerts
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