Did you intend to ask this question of ATK, the present owners of CCI & Speer?

My off-hand guess is that it costs more because they can get more for it. People don't tend to do much research or checking on things, they tend to just look at names, packaging, and maybe some ad copy. So, they see 'mil-spec' or something about suitability in mil-surp rifles, and want it. Even if it costs a little more. That's what marketing is.

I loaded up a few rounds with the CCI 200s took them to the range cycled one thru the action without firing. Sure enough there was a very faint ding on the primer. I was using a SLED as I was told this was the proper way to single load the Garand. The rifle was a real treat to shoot and performed way above what i expected.Last time i shot a Garand was at ITR in 1966.Thanks for all the input on the primer question.