I have heard tell that allegedly they wipe everything with Ballistol which may explain the glossy appearance of the guns. As for their commision it is a very big professional outfit that relies on a continuous throughput of stuff, they have a big staff & if you have ever been there it must cost a bomb to run it all.
All those costs add up.
I recently bought a few guns (muzzleloaders) from them & they were pretty much as described.
One bought on the sealed bid auction (cheapies) turned out to be far better than i had expected to the extent that its probably going to go back into service.
Even after commission i considered it a result.
I do think that the expensive end of the market for some stuff has been over inflated to the extent that the arse is liable to drop out of the market.
Maybe the forthcoming lead ban is having an effect too?