If you caught Judie’s review of the Roomba 560 but thought the $349 price tag was steep, you’re in luck. Woot! has the slightly less capable Roomba 510 (fewer accessories) on sale for $ 149 (Amazon has this same model for $249). But hurry, Woot! deals last for only one day. As noted, the Roomba 510 has some limitations and may be a discontinued model. The Woot! forum has a lot of feedback (mostly positive) here - and one Woot! buyer summarizes:

Buyers be warned. The 510 has all the cleaning power of the 5xx series of Roombas, but it cannot be scheduled to go off while you’re away. It cannot be used with a “Home Base” that the robot drives up on, it must be plugged in manually. And it cannot be upgraded to use the “Lighthouses” that allow it to move from room to room, cleaning one room at a time.It’s a great buy, but know the limitations on upgrading the ‘bot’.

Follow this link to Woot!. Still undecided, check out this excellent Amazon video review from Gary Busey Warner.