Woot offers Bessey GSCC2.512 2.5" x 12" Economy Clutch Style Bar Clamp (4) for $29.99 (reg. $55.54) free shipping with Amazon Prime. 

Product Description:
This economical clutch-style bar clamp has cast heads, coated steel bars, wooden handles and swivel pads, but not the higher price. Affordable enough to fully equip your shop and to solve all your clamping needs.Clamping capacity is 12 inches, throat depth is 2-1/2 inches, and bar size is 1/4 X 3/4 inches. Sold as pack of 4 clamps.