Thumb Score: 0
AliExpress has Roborock S5 Max at $ 418.73, after all the coupons (auto applied), the price lowered to $ 377.23 before tax (and yes you have to pay state tax). As with most of the things on AliExpress, you are likely not going to get any US warranty, meaning your extended warranty from Amex/Chase/Citi will not work on this thing.