C2C with digital goods ecommerce solution

[eluser]Unknown[/eluser]
Hey guys,

I know the title is bulky but I was wondering if there were any solutions out there that did all or even some of what I am looking for. I am looking for an ecommerce solution that allows users to sign up and create their own products. All their products will be digital so, once someone purchases their product they can download it. Anyone know of anything similar? close that I can play with? or CI just not the right fit for this problem?

Thanks

[eluser]Angel Web Design[/eluser]
You can do a lot of what you are asking with open cart. They have "affiliate" programs, and a plugin that allows affiliates to upload their own items for purchase. Works really well but the tech support is shockingly bad.