The best option is to go straight to the bank, if it's a bank foreclosure auction, and find who their listing agent/broker is. These sites are almost rigged to have the house go back to market or auction. That may be in the sites best interest, but not the banks... Especially if the time to pay property taxes is coming up.
Not an answer i know, but take my word for it, don't trust auction.com with as important an investment as your home is.

Oddly, the only halfway-decent site is through the govt at www.hudhomestore.com. It still sucks but at least the govt won't overbid you. They'll either accept or reject your bid or counteroffer.

Action.com is NOT trustworthy. It is a scam. I have bought thru Hubzu and Hudson and Marshall. They are both reputable