Hello, I would like to add a link to a free product (gift) in the shopping cart.The product would be existing in the Kentico catalog but should not be available to buy on the website (or appearing ...

As you probably know, there is currently no built-in product type for selling gift cards or vouchers. This article provides you with an implementation of 'Gift Card' product type in Kentico 7 and the option to apply multiple discount coupons to a single order.