Amazon offers its Prime members the Irwin Industrial Tools Next Generation 12" Clamp and Spreader, model no. 512QCN, for $15.98 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $6.12.) That's the lowest total price we could find by $21. Features include a locking swivel jaw, 3-1/2" throat depth, and removable pads.