I would estimate a cost of around $400.00 for the entire build. The chassis in the picture looks to be a Hammond, possibly a 12"x8"x2.5" (part # 1444-12825). Hopefully Jim has an old drill guide with dimensions for this board, this would make chassis fabrication so much easier. This is a great deal and I may pick up one myself.
As a side note, resist the urge to buy gold plated sockets. The gold plating is generally thin and separates from the substrate material causing all sorts of noises in the future you can't get rid of.