Limit costumer to buy 1 (quantity) type of product per order


So I have the case where the shop sells rare products. So the owner wants to limit for a customer to buy the whole stock. So how can I limit for a specific product to be only possible to buy one?

For example I have n products A,B,C …W
You can buy A to W in all the quantity you want, but the product Z can only be bought one per order.

Is this possible with webflow?

Any ideas and thoughts are very welcomed!
Thanks a lot!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

If you know how to write some javascript you should look at Mutation Observers. You target the shopping cart list where products in cart are and verify that no item is > 1. If a product is in more than 1 qty you hide the checkout button in cart and in checkout and show a custom error message saying the user needs to respect the 1 product by customer rule.