If you noticed horrible things after the person moved out and refused to buy the house, your $2500.00 will not not be given to you back. I was I can't get close to property until I have signed the contract. I noticed, all the houses they listed in my state were occupied for the duration of the bid. They definitely bid against bidders to jack the price.
People should be aware the trick Auction.com uses to jack prices on properties and how they get people to occupy the property so that property problem will not be fully disclosed to the bidder. I do not know if they paid these people to stay in their until you become the highest bidder and the have pay the $2500, which the not return to you if you tried to back out. Immediately they received your money through wire transfer, suddenly, the property becomes vacant. Beware of this kind of ripe-off. This is why they demand their money to be wire transfer.