in my usual aracde parts search i stumbled across this site selling used, gutted arcade cabinets for 20-30$ (US) plus shipping of course (unless you goto connecticut)
http://KSFAMILYAMUSEMENTS3.HYPERMART.NET/19empty.htmand before you ask, i am in no way associated with these guys, i just stumbled across the site and figured i would share it with all my BYOAC folks
enjoy.