I'm thinking to start this project, which is creating a marketplace website. On this website users are able to sell their products, just like on Amazon or eBay. But unlike eBay, it is not an auction. Users set their own fixed price (so, it's more like Amazon), and the product is online for a certain time. And unlike Amazon or eBay, this website is specialized only in particular product categories (which I will tell you later, if this thread becomes interesting).
Is there a finished software for this purpose, something like OS Commerce, which I can modify later?
I think this project is too big for me to handle by myself. If any of you is interested to join in, we can discuss it.
By the way, this is supposed to be for German market (don't worry, I do the translation