Look at the price of the CSSPECS Vepr and AK 6.5 Grendel magazines. That should give you an idea of the tooling cost. Supposedly Envictus is going to produce AK 6.5 Grendel mags with a price around $35 each.
https://stores.csspecs.com/vepr-6-5g/
https://stores.csspecs.com/vepr-6-5g/

