Hello everyone, Let's say I have a Books app with millions of books on sale at the same price. According to the Non-consumable definition, a book will not expire, so it should be Non-consumable. The problem is it is impossible to set millions of Non-consumables. But I can't use 1 Non-consumable product id for all of the books because a Non-consumable just can be purchased once. So, how does everyone deal with this?