This is actually a great deal because the unit is from Costco which means that you have a GREAT return policy. This is especially important for robot vacuums.
Thanks for the breakdown. You make a great point about the return policy - I've always wanted to try one of these things, but was afraid that I'd run into problems down the road and not be able to return it. Are you using yours on carpet or hardwood? It *seems* to me that the robot would have an easier time moving around on hardwood (perhaps the wheels would not get caught by carpet fibers and such), but that's no more than an educated guess. I'm also a little concerned about noise. I've heard that these things can be quite loud, despite their small size.