Prime members only.  Amazon has the dreame L20 Ultra 7000Pa Self-Emptying, Self-Refilling Robot Vacuum and Mop with Mop-Extend, Auto Mop Removal & Raising, Washing and Drying for $800 - $100 off coupon (clip coupon) - $70 off with coupon code BBL20ULTRA [Exp 7/23] = $630 with free shipping.