Ok. Sounds like you have a thumbhole Disc Extreme with a fluted barrel. It's the extra features which bump up the cost. You'll have to check the trigger group but I doubt they put the premium one on it.
Well I spoke to Knight about it this morning and they claimed they shipped a bunch of Master Hunters to dealer where I purchased mine for closeout. I spoke to the guy that sold me the rifle last week and he says it doesn't come with the laminated stock otherwise it is a Master Hunter Disc extreme and it includes the better trigger . I 'll probably get the thing tomorrow and will post a pic of it when I get it to hopefully clarify things and I;ll also take a picture of the box where the gun info should be.