That depends on what this can do. 6k would be a price I pay if it can do enough. I already have a $500 robot vacuum - which cannot do stairs and I have to carry it if I want it to do a different floor, so already $1000 is reasonable if all it is is a robot vacuum that can do stairs. If it can do things like fold and put away laundry, or load/unload the dishwasher (or wash dishes?). Can it put away the toys my kids leave all over (and also save me the bother of putting my toys away when I'm done)?