Until fairly recently this was iRobot's flagship robot vacuum cleaner. We have used it in our home for over 3 years, have never had a problem with it, but are upgrading our appliances. Comes complete (including filter, corner brush, muti-surface rubber brushes, original power cord and handbook), as well as a genuine iRobot replenishment kit comprising 3 spare filters, 3 spare corner brushes, and one spare set of multi-surface rubber brushes.
eBay