Silver pieces is generally accepted currency of the world. Most items have a price bound to them, and it is calculated based on its Rarities.
Homebrew Warning
Homebrew
Component Prices
For some reason components are worthless, until you spend your time and energy to craft something...
Base prices for components are listed in the table below. It accounts for difficulty of crafting and time spent to craft a component (adjusted to roughly match items crafted with them). Generally, a crude component is just a nice piece of rock you found under your feet, but let's assume Crude MC is 1 Silver Piece
Material
Refinement
Power
Crude
1
2
3
Common
2
3
16
Extraordinary
11
27
55
Rare
43
74
140
Legendary
138
207
374
Mythical
409
579
1023
If I forget to update the information here, you can always check a table in google sheets