I want to use Incomedia to sell various items from affiliate programs and perhaps other venues

This is an e commerce website as I understand

One way to do this is with credit cards, pay pal, shopping carts, information, etc.
another way is with a “buy now” button.

I want for ease of merchandising to use the buy now button ie not need for credit card processing, etc. and the products ship directly from the merchant to the customer and my information with the vendors is processed with buy now click and I am paid directly by the merchant into my bank account.