Amazon with Bestqi Ergonomic has the Pipishell Full Motion Wall Mount 13" - 42" TV & Monitor Bracket (PISF1) for $16.97 - $7.98 off with coupon code 2QEEO3O5 at checkout = $8.99 with free shipping on $35+ or with Prime.

• Accommodates up to 44 lbs screens, with max VESA/mounting holes spacing of 200mm x 200mm.