First, this plugin is fantastic, bravo!
On to my question: I have a client that runs a subscription-based service. He sells a product at cost then adds a service fee to the total transaction. On the form, the user selects the number of products to buy, options that don't affect the price, and the service fee is added to the total as a separate product on the page, quantity disabled.
All is well and good up to this point. However, when I go to the PayPal settings, I only get the option to create the subscription with either the service fee amount or the product price (multiplied by quantity) and not the total field, which is what I'd like to send as the recurring amount to bill.
Why is the total field not an option for creating recurring billing? My client would like to charge his fee per order, not per product, so sending the total field would be ideal.