I bought one of these I think on prime day for 179. It’s decent, for $140 definitely worth it. The rollers get gunked up a lot easier then my Roomba, the side brushes are terrible, and if it can’t find it’s base and you don’t recharge it soon it will partial lose it’s memory (forgets it’s schedules and have to re-enter them). But it does a better job navigating a room and runs into stuff a lot less then my Roomba. Both have thier plusses and minuses but for this price it’s definitely worth trying if you don’t have one.