There's an even newer floor scrub robot out now, since this one is the 2nd generation, currently on sale down to 9,190 baht. I love it — pour a bit of floor-cleaning liquid mixed with water in, and the robot sweeps and scrubs everywhere on its own. Used it for 3 years now and still love it. The floor genuinely feels clean, because when you wash the cloth attachment afterward, it comes out visibly dirty. Worth every baht.