I assume he is referring to the act as being tortious interference with a contract? Just spit balling here though.
I took it as he talked with him inside after he declined the offer and meet him outside to buy the gun. The way I look at it is thats what the pawn shop owner for trying to take advantage of the guy. I know a lot of people on here that has their FFL and not a one make 45 to 50% GP on hand guns. The guy has just trying to lowball and it backfired in my eyes.