Protolabs would probably quote you on this. https://www.protolabs.com/services/cnc-machining/?utm_campaign=us-cnc&utm_source=google&utm_medium=cpc&utm_term=order machined parts online&IDA_Search_CNC&gclid=EAIaIQobChMItKPvl_nI-QIVDD6tBh25HwRfEAAYAiAAEgJeRPD_BwE
I think they're more geared to one off and prototypes, but worth a shot. Let me know how it works out. I'm going to need a set as well as someone removed all the buttons off of my unit.
Mark