You can get a basic bench up and functional pretty cheap.

Buy a maple bench top from Grizzly, about $275 for a 72"x30"x2.25". (Other sizes are avalaible). Or another source of your choosing. Buy some doug fur from borg, along w/ some steel L-brackets, and screws. Buy you favorite vice. Build a base/legs w/ the doug fur L-brackets and screws. Mount the vice to the bottom of the maple slab, recessed and fitted to your needs. Flip right side up, align to base and attach base and slab w/ L-brackets and screws. Mark and drill 3/4" holes for bench dogs, configured as you see fit. wha-la!