How to Integrate Paypal for month charges that varies?
问题 I would like to integrate paypal into my current servicing site. I am able to generate the details from database, and retrieve the users' charges, such that a user charges would be using this forumla: Amount payable = no. of hrs service used within the month x $5 per hr I would like to charge users based on their usage on per month basis, and automatic billing/deduction from their credit cards. Should I be using a subscribe or buy now settings for my situation? As different users will have