Newegg has the Rosewill RHTB-11012LP 13" to 27" Wall Mount for $15 - $5 off with coupon code EMCJHHF99 [Exp 12/25] = $10 with free shipping. Compatible with VESA 75 and VESA 100 patterns and supports up to 27" screens.
Got one last time, pretty good deal. It holds with two screws in the wall and four on the back of the monitor. I mounted a 15" monitor and it went fast with only a few screws and is solid. It comes in two pieces and the two pieces then slip together. It has minimum clearance in the back for wires and tilts only 15 degrees so its pretty close to the wall. It has a big nut that has to be tightened to keep it from tilting from the monitors own weight. I also stuck a piece of cardboard as a shim to tighten everything up between the plates, but it has a safety screw to keep the plates locked together.
Got one last time, pretty good deal. It holds with two screws in the wall and four on the back of the monitor. I mounted a 15" monitor and it went fast with only a few screws and is solid. It comes in two pieces and the two pieces then slip together. It has minimum clearance in the back for wires and tilts only 15 degrees so its pretty close to the wall. It has a big nut that has to be tightened to keep it from tilting from the monitors own weight. I also stuck a piece of cardboard as a shim to tighten everything up between the plates, but it has a safety screw to keep the plates locked together.