If you want a Glock, you just have to find a Glock law enforcement dealer. If you go to Glock's website and search for dealers, you can select LE dealers. They call it the "first responder discount". I even qualify as a volunteer firefighter with a department issued ID. $400 for almost any new Glock, and a few bucks more the longslide and ported models.
The Glock LE dealer I dealt with is a police supply store, and they also carry S&W, Ruger, Remington, and Springfield. All have discounts, but not nearly as good as Glock's. This particular store also gives a discount on used guns and accessories. My buddy picked up a trade-in Glock 22 for $289.