Lowes and Irwin have the following offer.
Free One year subscription to Fine Wood Working Magazine with a purchase of a 2 pack 6" Mini Quick-Grip. This is valid from 3/1 to 4/30/2005.
Information on clamps:
IRWIN® 6" QUICK-GRIP® Mini Bar Clamp (2-Pack)
Item #: 96054
Model: 5462SM
$19.88
So for a twenty dollar bill you get two clamps and a one year subscription. Seems like a deal to me.
It also asks if you are currently a subscriber on the form so you might be able to extend a subscription as well.