Are you trying to "study" auctions or make money? You need to be more explicit about the goals of your site and as other people suggested: hire a designer.

Another really bizarre aspect of your site is the use of Adsense. If this is supposed to be a real business why attempt to make some small pocket change off Adsense? It's really quite confusing.

These things all add up to make you seem untrustworthy. 3 things to do:

1. Clarify your purpose. 2. Clean up the design. 3. Get rid of Adsense.

Unless you're a content site that is living off ads it makes no sense to have Adsense. Given that you're running a gambling site, the inclusion of Adsense just makes it seem even more obvious that you have this naive get rich quick ambition.