Monoprice has the Monoprice Recessed Full-Motion Articulating TV Wall Mount Bracket for LED TVs 32" to 60" (Black) for $127 - 15% off with coupon code 15NOW in cart = $108 with free shipping.

The mount supports displays with weights up to 200 lbs. (including the weight of the mount itself) and VESA mounting patterns from 100x100 to 600x400.