I want to implement payment gateway for iPhone native app.
I have read in few of the sites that I can integrate apple payment gateway for this through In App Purchase. But if I want to do through In App Purchase then, I have register each of my product with AppStore and set a price margin for each.
Rather I am building something like shopping cart where prices of products are different.
Please guide how should I proceed, is there any other payment gateway that I can integrate with my iPhone native app.