Im with bianchi girl, from looking at it you can tell it had a problem thats the reason maybe nobody bid to it, to me the bigger second flag to do not bid is the fact that the paint job is relatively new. That's not a bike that is mint, never seen a gueccioti with that paint job just to star, and to me thats a repainted frame, when? who knows. How the tube got oval? no idea, people does the weirdest things to their frames and probably this one was clamped too much in the bike stand????
Fill up a claim with ebay and get your money back.
For the ones thinking in getting this fixed, pretty much can be fixed, is not that hard if you know what are you doing. The top tube needs to be replaced, maybe a 300 to 400 bucks job depending on the builder. For a 700 bucks bike dont worth it you know. Thats the problem with old bikes, a frame worth to be fixed based in uniqueness and price, but since that frame pretty much can be found quite often IMO don't worth the time wasted.
You have like 400 bucks worth of parts in there, if you need a donor bike great.
Another option is to ask a partial refund, maybe like 150 or 250 arguing that you have to fix it, if the guy gives you the money back, keep the parts, sell the frame for 50 bucks and keep the fork or sell the fork for 150, and use the parts in another bike or sell the the parts, that bike worth more in parts anyways.
Good luck.