Not sure if anyone knows this but I sell new Criterion barrels for $170. That's a bit cheaper than anyone else sells them including the CMP. I install the things on your stripped barreled receiver for $50 or on your rifle for $75. I believe that my install prices are also a whole lot cheaper than anyone who's actually in business.

Shipping for a barrel install is;

East of the Miss Rifle $32, EOTM BR $15, West of the Miss Rifle $40, WOTM BR $25


One caveat, I don't just sell the barrels, I only sell them if I install them.