Maximum number of product in a subscription

Our main objective is to create a subscription that allows users to purchase up to 30 products per month, but no more, under a single subscription.

However, we cannot offer a fixed bundle of 30 products. Instead, customers should be able to choose any 30 products from our selection of 1,200 each month.

The user can purchase up to 30 products with a 100% discount. For the 31st product and any additional ones within the same month, they will have to pay the regular price.