On the auction page you can just hit "View Older" at the bottom as many times as you'd like. The Search option at the top lets you find all their old auctions.

On the auction page you can just hit "View Older" at the bottom as many times as you'd like. The Search option at the top lets you find all their old auctions. One thing I really like about bring a trailer is they keep the bid history available so you can get a much better feel for real market value compared to some like looking up blue book.