Woot had a good price on what appears to be a quality product but.....the round BB-1000 didn't fit on my round Eljer toilet. The problem is the curved transition from the toilet rim to the toilet tank. It does not allow the bidet to align with the rim. The curved transition forces the bidet seat to overhang the front of the bowl by about 2". Woot's return policy means if it ain't broke, it's yours. Of course, the manufacturer couldn't help either.

My Advice:  Do your homework.   Check with Bio Bidet for compatibility with your toilet before buying.