A "trash bag" purse was a highlight of this season's fashion shows. From a distance, the expensive leather bag looks just like a big black plastic garbage bag. The price for the new purse will be at least $1,500, according to fashion experts. We have carried our purchases is black plastic bags at flea markets for years and never knew the look would become fashionable. Vintage purses of all types sell quickly at antiques shows and flea markets for about $20 and up--way up. Used vintage Birkin bags, the famous purses by Hermes, sold at the 2013 Baltimore Summer Antiques Show for $11,000 to $12,000. A used very rare porosus (saltwater) crocodile leather version was priced $63,000.