Is this 20 a good deal?

[edm1]

I am looking for another ( I sold one) Glock 20. I can get a new one locally for $530 or a used one with a standard barrel and a Glock long barrel for $529. The only other thing is the used one has 10 rnd mags and the new one of course has 15. I have some 15 already for my 29....but 10 rnds are useless.... Anyways, does the extended barrel make it worth it? What could I sell it for if I just wanted the regular barrel?

[edm1]

Nevermind. I went with the New. I had no want for a longer barrel.....yet...