We should be able to pre-configure the DPI rating for our products canvas within FPD so we can have a Metric and Standard Measurement Scale and Ruler. If we were able to set our Canvas DPI rating we would allow our customers the ability to see the actual size of their design, and properly scale their design as they increase or decrease its size. Customers could see proper pricing to size ratios within the Pricing Rule Add-On.
Please refer to this ScreenCast video for additional info. This would allow the customer to see the exact size of the print for their design.