I've a marketing website. I like to add shopping cart with it. It must have the features-
1. Recuuring payment (subscription).
2. Coupon/Discount feature.
3. Payment integration to Paypal pro/ Paypal standard.
Let me know how you plan to implement it. Which one you like to use Magento or Oscommerce? - please mention it in your bid. Or, any other solution. If you don't understand please let me know.