Happy Tao via Amazon offers the Lumsing Full Motion Single Arm Monitor Desk Mount for $29.99. Coupon code "DVSAYBAO" drops that to $23.99. With free shipping, that's $6 off and the lowest price we could find. It fits screens from 13" to 27" and features 35° tilt, 360° rotation, arm height adjustment, and a C-clamp.