Hi there Zenners.
I've got a suite of products that have an optional support contract. The support contract cost depends on the total order value and has a minimum value. The cost is calculated by taking 20% of the order value, and has a minimum order value of 2000GBP. How would I go about creating a product with these qualities? is such a thing possible? Happy to supply more info if it's required.

Thank you in advance.

P