We looked at the code to arrive at the total amount used (ptotal) and realized that the net amount was not calculated in a "single" state, rather it is a compilation of all three (product, tax and sales) plus any discounts plus other deductions (promotions, certificates)  along with the # of units of a product, and then the Ptotal amount is  the value that is passed to the gateway.    Therefore no  "net" sales amount exists.   I think it is in the order that they "build" the pTotal that causes us not to have a net product total/amount. The pTotal is a list of all items involved.

 

We looked at writing a script for this but haven't gotten that far - (we're new to this also, and just finished customizing the site so our users can upload images to their order).  

Depending upon your volume, you can hold the orders and re-calculate ever day or other day - depending upon your ShareASale settings.   We use in-house web apps for our affiliate programs and with PC (our first venture with this ecommerce platform) we mark each sale as pending, then discount taxes and shipping for orders above before approving the sales.   Except for the holiday rush shipping, most orders use our basic shipping so we're only looking at $2.00 extra on a average $200 order that we pay affiliates.   You might also want to add a "Handling" fee to adjust the extra payout to affiliates and to work on mainting profit margins.  (gets complicated though doesn't it?)

 

If no one comes up with an already designed solution, we can look at this in the new year as we would like to pay on net also.  But I do think it would be a lot of work - because of the way the tallies are totalled and the options for the items.