Well, I got the basic Roomba Red for $67 plus shipping off E-bay. It doesn't have scheduling or a docking station or anything, and that's fine. I'm not sure I'd pay $200 for one. I prefer to set the one wall and then have it do one room at a time while I go do other things. It picks up hay dust, bunny hair, and poops very well. The larger stems of hay kind of get pushed around instead. Also, while it does OK with most of my throw rugs, I do have one that has a tendancy to get sucked up inside the mechanism and jam it up.

One thing you don't get from the commercials - it's just as loud as a vacuum cleaner, so there's never any doubt when it's working.