Tried whisper myself with the following format on the recipe "Primal Molten Breastplate" in blacksmithing:

Input
Inspiration: %insp
Crafting Costs: %cc
Materials: %rl

Output
Inspiration: 41%
Crafting Costs: 1596g 160s 2c
Materials:

According to CraftSim Cost Details the cost should be 1596g 32 silver
This occurs on more recipes but this was just an example :)

Hi I think you are on the wrong addon github page, you want to go to CraftSim :)