I'm trying to put a fair value on a customized Glock that I have. The gun is a gen 3 Glock 17. It has Glock Night Sights and a gun smith installed Wilson Combat Barrel with serial number matching the frame. It also has a full length guide rod. I'm going to sell the gun with 3 mags. It's very accurate and still reliable. The only detractor in my opinion is that the Gun Smith/Shop stamped their name on the back of the slide just behind the serrations. It's a small stamp but obviously some people won't like it. Of course the gun is used but in great shape. What do you think is a reasonable price to ask for it if I list it on the forum here?