I went to pricebenders a few times...never won...:( so sad.
But I can tell you this! If you don't want too lose to many TC, start bidding when the time clock start 45 - 30 seconds. That way you won't lose to many TC, and if you're lucky...you'll win.
At then there are always 2 the "most strongest" bidders, so you have to watch out.