I am confused with the Fantastico scripts on the cpanelx server.

I want users to be able to have a part where they can put their products up and give information on how to buy it, and securely.

I have found other sites which ask for your information to buy it from your site, I instead want people to sell their products, I am no salesperson XD

Anyways, anyone know a script that does that?
I want one where a user puts his/her product up and wants to sell it, not me list a product and it goes from my site.