# Purchasing - [Making a Purchase](https://docs.onside.io/sdk/purchasing/making-a-purchase.md): Start a purchase by adding a payment to the queue, process the resulting transaction, and finish it. - [Restoring Purchases](https://docs.onside.io/sdk/purchasing/restoring-purchases.md): Let users restore their previous non-consumable and subscription purchases on a new device or after reinstalling. - [Handling Storefront & Price Changes](https://docs.onside.io/sdk/purchasing/storefront-price-changes.md): Approve or cancel a queued purchase when the storefront or price changes between enqueue and execution, using OnsidePaymentQueueDelegate. - [Managing Payment Methods](https://docs.onside.io/sdk/purchasing/payment-methods.md): Let users manage their saved payment methods (bank cards) with OnsideKit's built-in payment methods manager screen. - [Apple Pay](https://docs.onside.io/sdk/purchasing/apple-pay.md): Set up Apple Pay in OnsideKit using a Merchant ID, an Apple-generated certificate, and your app's Apple Pay capability. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.onside.io/sdk/purchasing.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.