Reverse Markup when clipping product

The markup button should also offer a “reverse markup” for when we are clipping items from Retailers, so we can figure 20% less than retail, for instance. Right now the AI clipper clips the retail price, but we often get 20% or 15% or 30% from that price. So when we clip the product now, we must get out our home calculator and try to figure out our trade discount in order to load the product correctly. Would love to have a quick way to start with the retail price and quickly calculate our unit price.