Roborock Technology Co. Ltd via Amazon has Roborock S7 MaxV Robot Vacuum and Sonic Mop on sale for $539.59 after clipping the $200 Off coupon found on product page and enter the code RRS7MAXV at checkout. Shipping is free.
It’s also available on Roborock Official Store for $539.99 after enter the code RRS7MAXV at checkout.