REO Auction. Will it loose it's reserve price?

I am looking at buying a house that is being auctioned on XOME.COM. it currently has a reserve price that is above what I am willing to pay for it. Obviously I do not know what the reserve price is because I have not met it. It has gone up for auction 3 times now and I am pretty sure that I am the only person interested in, and or watching, this property, no one else has bid on it. I could probably raise my bid by about 10,000 and still be able to make money off of the property. My question is should I go ahead and raise my bid? Or should I wait?

Thank you for any input!