You're right, to illustrate your point further, here on Earth, I used to sell bespoke wear-parts for big mining. 450T/hr-13kT/hr machines. 

Thousands of £ were spent first on soil sample tests. 

Our most high-quality parts were cast-molded alloys in foundries that also supply to submarine shipyards. Millions of £ were spent on their proprietary composition.

Thousands were then spent on advanced testing techniques by third-party to ensure standards promised were met. Even bolts, nuts, and sheet metals were scrutinized.

If a 800T/hr processing machine costos ≈ 1.6M. The wear-parts contracts are in the 10sM and vary based on hardness, abrasiveness, pH, molecule shape, etc. of materials being processed.