I would tend to think you are correct. Classic is being pretty business savvy by bleeding out inventory to maximize profit if they ended up with most of it, which I have not seen elsewhere.
I am pretty sure the Milsurps Classic is selling is from the First Samco auction which was all bought by Century . A lot of it was loose parts that needed to be assembled to make guns . The ammo has not hit yet but they had a lot of ammo with bonus green funk on it when Samco was selling it . I wonder if it will get better