I am trying to figure out what is the best shopping cart for my needs. I need a cart where my customers can pre-purchase postcards, then create them online whenever they like. I have looked at several carts available, but I am unsure which will do this for me. Also, I am considering having one created for me, I'd like to know if this is a better way to go, and costs. I have attached an example of what the page that I'd like to use looks like.
1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.
2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request.
3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site).