InkSoft's print pricing is straight forward. You create the number of breaks for your quantity range. This will then allow you to assign a specific grid to a product or a specific color of a product.
NOTE: You can create as many grids as you would like. It will automatically come over with Default (Dark Color Grid), Light (Light Color Grid), Heat Press and Sublimation.
Need some information over increasing your revenue and lowering your cost when pricing to your customers? Printers Guide to Profitability