Collectibles are a > $400b market that is underserved by legacy marketplaces like eBay. Founded by collectible enthusiast and serial entrepreneur Mark Rosenberg, Hip Ecommerce operates vertical collectible marketplaces (Stamps, postcards, and comics) that have a deep vertical experience for the collector in each category. For example, comic collectors frequently are looking for a specific range of CGC grades and HipComics allows you to search and buy that way.