The $500 disc he speaks of is 30mm.. I have only used those for full arch hybrids. A full arch for $500 in materials, depending on how you want to customize it ex porcelain. Sure you can get cheaper high mpa zr but I'm not kicking and screaming over my entire system for one category of disc.
A 16mm ($360) which is my standard everyday disc- depending on tooth size/ nesting anywhere from 18-22 units. $20/ unit @ 18/ unit per disc.... call me crazy but I'm totally ok with that.
@cadguru11 what is the real problem with your machine? It seems like that is the root of your frustration and you're piling on anything else that maybe irks you to bolster your frustration. Your price argument can barely stand on two legs, you're complaining about a couple bucks when in the larger picture your saving thousands by keeping your work inhouse.