I was in KTP in Maine one day and watched the gun buyer go through his line for a bit.He had a internet hookup and would look on all the same sites we do,GB,AA,GI and GA and come up with a value by looking at what the current market was.
Have no clue how CAB comes up with theirs but I may bring some guns to them if they are paying anything close to some of the price,I will happily take 50% of what they have on retail for some of those guns !

Hillary For Prison 2018