Package price before adding to cart

Hello,

 

We've recently made a few modifications to our package setup.  In one venue we use a package based fee and the other two we use performance-based fee.  Our current website is having trouble dealing with displaying the prices of both of these setups (I can code it to add the one time fee but that breaks it when the fee needs to be multiplied by the number of performances).  This page is the step before it gets added to the cart.  Both situations work fine once its in the cart, it is displaying the pricing for each section BEFORE it gets into the cart that the issue arises.  My question is does anyone know of an easy way to make the web API calculate the total package price with all fees included.  I can't believe there is no way to just ask for a package price directly from the API and let it figure out the fee rules to just send back a final price.  But maybe I'm wrong.

 

Thanks!

Sean