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Hi there, I am building an app which will have a single subscription plan for users to purchase to access premium content. For this we will be using Apple in-app purchase.Concern We are also planning to offer some courses (digital products) from the application. These courses will also have two types of prices -1. for users who have not purchased the subscription plan2. for users who have purchased the subscription plan and are entitled to have some discount in price.The problem is that the prices of these courses will lie anything between $5 to $100 as regular prices and discount prices respectively. If we go the Apple's in-app purchase route, then we will need to create 100s of in-app purchases for the app which is not feasible and efficient for the performance of the app.Is there any other alternative solution to this problem? Can you suggest how we can go about this? Can we use any third party payment processor like Stripe and have the payment done through Apple Pay?We have really tight schedule and launch date is round the corner. Your quick response with solution will be highly appreciated.