The popularity of shows like Storage Wars and Antiques Road Show have inspired many people to attend public auctions in the hopes of finding diamonds in the rough–pieces of old memorabilia and vintage collectible items–that they can either keep or make a profit off of. Here are a few tips to keep in mind when attending auctions so that you can walk away a big winner. Things to Do Before the Auctions Begin. Prior to the day of the auction, check what the payment terms are. Some auction houses may only accept cash, so make sure you can pay with…