Love threads that start out with “how did I do?”
First and foremost, Congrats OP! Very nice gun and a great deal you got.

The aforementioned question is usually a not so subtle lead in to some gloating. Gloat away!! You got a great deal.

If the question is legitimate and you have no idea how good the price was, you are no smarter than the seller and nobody got taken advantage of.
Much like teenage love, you both bumbled your way through it and both got what they wanted.