Shopping car woes

I cant seem to find a shopping cart that has the features that I want. I simply need a shopping cart app that will let my users pay on either Paypal Or Amazon.

Other than that I want to be able to make items on pages. My thought process on this is at some point i will sell items on both E-bay and amazon. Then at some point leverage amazons and shipwire so i don’t have to physically carry inventory.