While any good machine shop can do them it's probably to your financial interests to simply purchase them done already.
A shop will change you for both programing and run time on the work. There will be a tool change invovled at least two times; drill, chamfer tool, and ball end mill. You'll then need (or want) to have them zinc plated. That alone with only two (or four) rotors will cost you a lot charger of about $75.
All said and done you'll be right where you started at looking at other options for less money. *buddy own's a machine shop, beer, game tickets, trade issue etc. aside.