Ok. There are plenty of places to get Niche Stores (buildanichestore dot com affilistore dot com)many of them are free.. but they all mainly focus on ebay, and also on 1 small niche.
What I need is a store that will have items featured from many categories with a dropdown menu to choose between them. Also I don't want to use ebay. The store will need to be able to scrape items for auction from the auction site, and feature them in the correct category in the store.