Xiaomi Mijia 1nd generation S50 S51 S55 Roborock 2nd Robot Vacuum Cleaner Smart Home Remote APP
1nd generation deal price: A$ 379.99
2nd generation S50 deal price: A$619.39
2nd generation S51 deal price: A$614.39
2nd generation S55 deal price: A$624.99
This is hardly a deal and just seems like spam, Gearbite have a cheaper price on most of these using the coupon "PEGASUS". Links:
This eBay seller in the OP is also based in Singapore, so won't come with any local warranty from what I can tell.