I have a content type EVENT with the event date field,

I created products with various attributes (ENTIRE - UNDER - FEMALE, etc ..)

Each attribute generates a different price for the product.

Product1 -> ENTIRE = € 10 -
Product1 -> UNDER € 8

Product2 -> ENTIRE = € 15 -
Product2 -> UNDER € 5
Now, in registration (COMMERCE REGISTRATION) checkout, insert the birth date of a user. I must compare birth date with event date. If the user is a minor pays UNDER, otherwise ENTIRE.

Thank you so much.