Darn you beat me by a minute
I just purchased one and was about to post the deal. Anyway, great deal, repped, and thanks!
Here are some of my thoughts on the unit. Keep in mind this is my experience only:
This is my 4th unit from Costco now. I really, really want to this vacuum to work properly, but I have had numerous issues. The first one worked well for over two months and then stopped being able to return to its base by itself. (note that when it did work, it was the most awesome feeling to come back to a vacuumed apartment). The second one was similar but experienced this problem within two weeks. The third one got the infamous "my left wheel is stuck" error within the first week. I keep coming back to the Neato because I've invested a lot on additional magnetic strips and really like the unit when it works.
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.