Here is one for $40 at Harbor Freight:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47937
LOL...I just looked at that exact model. I "spent" around $350.00 and had everything except the T-Square, Metal Ruler, Paint, Primer, Rollers, Mixing Sticks, MDF, Shelf Bracket, L-Brackets, Screws, Velcro, Grommet Sleeve, Sandpaper (wasn't sure which grits I needed to get), Casters and a few other odds and ends.
If we add tax, the missing items, and a fudge factor, I can't see this being more then $550 - $600 total. Then all, I'd have left would be the computer, cp parts, artwork (which I'd probably do without to start), bezel, marquee, etc.
I'm really tired and not thinking as clear now. I'll update the list tomorrow sometime.