Max number of monthly downloads

Thank you, Amanda, much appreciated. After playing with Wix a couple of hours, I came to the same conclusion yesterday, just using the Wix database (called Collections if I am not mistaken).
However now I have a bigger challenge: understanding how to update the prices of items added to the cart. Apparently, there is no endpoint in the Wix APIs to deal with this requirement. Indeed, I will need to maintain 2 different prices for the same item (depending on the logged user type of membership) and I’d like to avoid duplicating records for every item. Instead, I would like to change the value of items only after they’ve been added to the cart, and prior to the checkout, based on the user role.
Do you have any suggestions, perhaps?
Thanks!
Mauro