For a used gun, it seems OK, even for 50 rds. fired. A local shop here in town has M+P 9's for $550 give or take.....
Than I was told, if I wanted to trade in anything towards a new purchase they would only give me $200.

So if I had a G21 with less than "x" number of rounds through it, doesn't matter if it still looks new, with box, and all manuals....
What is so different with the SPECOPS besides a threaded barrel?
Sounds like a good deal, not stellar, but a good deal. Get to splitting hairs for $20-$50, difference....It's still a great pistol...