eBay with Black & Decker has the Black & Decker WorkMate WM125 Vise Portable Work Bench Project Center for $28 with free shipping. Features compact lightweight design, steel frame, wooden vise jaws, adjustable swivel pegs that clamp awkward shapes, and holds up to 350 lbs.
I've the next one up and it is far more sturdy and useful than this low end model. This one is really just a sawhorse with a thin clamp. The one up had heavier legs which is solid and planted and the table can handle clamping on power tools. It costs more, but does much more and you get your money back in utility. Mine is setup in the garage and I use it every day; although, I also have a workbench.
I've the next one up and it is far more sturdy and useful than this low end model. This one is really just a sawhorse with a thin clamp. The one up had heavier legs which is solid and planted and the table can handle clamping on power tools. It costs more, but does much more and you get your money back in utility. Mine is setup in the garage and I use it every day; although, I also have a workbench.
http://www.youtube.com/watch?v=ZG0ft_5YXsA