You’ve heard of eBay, Amazon, and of course ThemeForest – right? Other than each of them being a huge success, you know what they have in common? They’re all Marketplaces. A Marketplace is a special kind of online store. It’s a site where you bring buyers and sellers together (but you don’t create your own products). Actually, you’re on one right now – as Envato created this marketplace and you’re now looking at a product sold by a different seller.
Demo: http://themeforest.net/item/marketify-marketplace-wordpress-theme/6570786