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The best robot vacuum under $300 in this WhichVac catalog is the eufy RoboVac 11S Max. It leads with a value score of 48. The recorded price is $279.99 as of October 31, 2026, a cited snapshot rather than a live Amazon price. The score uses published specs, not a lab test.
Recorded price under $300. List-only prices count only when no street or sale snapshot exists. A later live price can move a model on or off this page. 1 models are ranked.
| Model | Value | Recorded price | Suction | Mop | Self-empty |
|---|---|---|---|---|---|
| eufy RoboVac 11S Max | 48 | $279.99October 31, 2026 · snapshot | 2,000 Pa | No mop | No |
Filtered to a lowest recorded price under $300, then sorted by value score. The $300 line uses the same recorded prices as the rest of the site, not a live shelf check.
eufy
Slim eufy vacuum with a published 2,000 Pa suction rating, 2.85 inch body, and bounce navigation. It has no Wi-Fi and no mop. The brand store price below is the figure printed on eufy.com.
Filtered to a lowest recorded price under $300, then sorted by value score. The $300 line uses the same recorded prices as the rest of the site, not a live shelf check. Scores are not lab tests. Methodology.
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eufy RoboVac 11S Max leads this best robot vacuum under $300 list with a score of 48. The rank uses published specs only. It is not a lab test.
No. Amazon's price is shown only after the Creators API or PA-API returns one. Figures labeled cited snapshot come from a named review or a brand page.
No. WhichVac sells no paid placements. Order follows the published formula on the methodology page. A brand cannot buy a higher slot.
The cell says Not published. That input drops out of the average. It is not filled with a guess, and silence is not scored as zero.
The order changes when a cited spec or recorded price changes. A live Amazon price from the Creators API or PA-API can move value and the under-$300 list.
See the robot vacuums and mops we picked, on Amazon.
Shop our picks on Amazon (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.