Well talking about mark up Glocks are made for less than $100 and cost $550 in the store. But I agree on the Kimbers I wouldn't pay $1300 for a 1911 style pistol because they painted it tan.
Thats because they have to make up the cost for fixing the glocks for FREE! Even if you bought it used. Ill pay the extra money for a lifetime warranty. I would think the most overpriced gun would be the bushmaster ACR. Shot one, and it was no great shakes.