Ends tomorrow. eBay with iRobot has the certified refurbished iRobot Roomba i3+ EVO (3550) Self-Emptying Robot Vacuum for $330 - 15% off with coupon code REFURBISHED15 [Exp 4/24] = $280 with free shipping.

Has the 10x the power-lifting suction compared to the Roomba 600 series.