iRobot Roomba and Braava robot vacuums and mops.
My iRobot Roomba 980's side brush kept failing, its rubber heads turning brittle and snapping, even on the spare after a single clean. Frustratingly, replacements are only available from iRobot's official agent, with no cheaper alternative.
The iRobot Braava Jet 240 retails for S$469, dropping to S$399 during IT Show 2017, where distributor John Ackerman had a cash-or-NETS booth. Since the same discount applied online, I simply ordered mine from their website with fixed-price delivery.
My cousin Joanne gave me the iRobot Roomba 980 as a housewarming gift. The top-of-the-line Roomba retails for S$1,498, sitting above the Roomba 880 at S$1,298, the 650 at S$798, and the entry-level 630 at S$698.