Traditionally I always looked at it as the buyers responsibility to come to me if I am selling something, as I do for dellers when I am buying. I do not see anything wrong with the seller setting the place to meet. I've never had a gun store come to me when I wanted to purchase something
. I am sure that you were just the end of a bad day for him of dealing with crackpots hammering him on his pistol. Everyone here who has listed a firearm for sale can tell you all about it. Sounds like it wasn't the gun or deal for you and you will be just as well off without it.