Prime Day is the perfect opportunity to buy a robot vacuum on sale. The pricey appliances are heavily discounted at Amazon's four-day sale, with record-low prices from brands like Shark, iRobot, Roborock, and Eufy.• Shop Amazon's full Prime Day saleOur team of deal experts at TechRadar has rounded up the best robot vacuums on sale for Prime Day for every budget. With deals starting at just $129.99, you'll find some of the best robot vacuums on the market, including features like self-charging, mopping, and voice control, to name a few.Keep in mind that today's Prime Day robot vacuum deals are the lowest prices we've seen this year, and Amazon's four-day sale ends on Friday at Midnight. You must be a Prime Day member to access today's prices, and if you aren't already a member, you can sign up for a free 30-day trial and gain access to today's sale.The best Robot vacuum Prime Day deals iRobot iRobot Roomba 105X Robot Vacuum, eufy Eufy Robot Vacuum 11S Max Shark Shark AV2501S AI Ultra Robot Vacuum The best robot mop-vac combo Prime Day deals roborock Roborock Q7 M5+ Robot Vacuum and Mop, iRobot iRobot Roomba 105X Robot Vacuum & Mop Combo Shark Shark Matrix Plus 2-In-1 Robot Vacuum & Mop for Carpets & Hard Floors roborock Roborock Q10 S5+ Robot Vacuum and Mop iRobot iRobot Roomba 415X Robot Vacuum & Mop Combo Roborock Roborock Qrevo S Pro Robot Vacuum and Mop Shop more of today's best Prime Day dealsAmazon Devices: Fire Sticks & Echo from $18Amazon Haul: viral gadgets, tech & appliances from $1.99Apple: MacBooks, AirPods & AirTags from $29Beauty: 50% off toothbrushes & hair toolsCheap TVs: smart TVs from $69.99Garden: tools, mowers, planters from $24.99Headphones: 50% off Beats, Bose & SamsungLaptops: Apple, HP & Dell from $199Mattresses: Sealy, Serta & more from $186Patio: outdoor furniture, rugs & decor from $19.99Sports: 50% off fitness gear, treadmills & clothingVacuums: Dyson, Shark & Bissell from $34