Calculated properties for Products

This is becoming a breaking point for my company. They have been using a mark up strategy for 20 years and refuse to make a change in their procedures. I have tried every work around to try to make them statisfied with the way that products and line items are limited but because I can not create a calcuation field, I have no way of making a printable copy with all the information on it. Additional line items are not accesable by personalize tokens and I can’t access them by workflows; because of this, I can’t create any work around that doesn’t add more work to the sales guys, this is causing my company to want to move away from hubspot all togeather.