There is a Woot-Off on Wednesday and they may sell BOC’s then, though I don’t know for sure. Otherwise, look for special events like the Woot Funhouse, the 4-of-a-kind dice game (one will be held on Friday), etc.
Check out the Mobile Week schedule for more info on the two things mentioned above.
(Please note: I don’t work for Woot, I just volunteer to help out here on the forums.)