Auction.com is not the same as the foreclosure auctions done at the courthouse steps.
It is possible to get an o.k. deal at Auction.com but I have not seen any great ones and most are at and sometimes even a bit higher than what I would consider market value, especially when you factor in the Buyer's Premium (a fee the buyers pay on top of the winning bid).
They have low starting bids but what many buyers fail to realize is that there will usually be a 'reserve' (a minimum price that the seller will accept and is not disclosed to the buyers) and that all sales are subject to the seller's approval so even if you 'win' the bid you may not actually get to buy the property. There are a few other things that you should know about so I suggest that you read all the fine print that they disclose.
You can still have your own agent represent you and I suggest that you do. Your agent can help you determine a fair price for the property (auctions can be exciting & bidders can get carried away) and they can also get you into the property prior to the auction. A lot of the bidding can be done online & they can do that for you too.