Okay I know this thread has probably already been up but I have to voice my opinion. There is no used Glock worth more than $525.00 I don't really care if you spent a lot of money on decking it out. It is just like a hot rod you can put a fortune into it and still not get what you put in it !!! it is still a used glock people. I am speaking from experience I have tricked out a lot of my glocks in the past you still do not get the money back that you spent on a stock gun take your loss and go on nobody wants to pay extra money for something that you wanted . In my opinion there should be no gen 3 Glocks over $425 and no Gen 4 Glocks over $525. Just my opinion.