Check out Jack Smith Gun Sales down on Hubbell Avenue in Des Moines as he usually has new and used Glocks available, plus he also does some gunsmithing which many of he new "super sporting goods stores" won't do.  I figure if it only costs a hair more to give my business to the local gun shop (sometimes they're less) to keep them around then I'm all for it, once Wal Mart and stores like Scheel's run all the small gun shops out of business then they can do whatever they want and not sell whatever they want because where else are you going to buy it.  Good luck on whatever you decide!