[quote name='SneakyPenguin']i really only want the metal slugs, and id just leave them in the machine. but yes im actually looking for the full cabinet. i heard an aes is cheaper, but the game price i heard kils it. if it doesnt matter that much, i could go with aes.[/quote]
if you look around (newsgroups, ebay, newspapers, arcades) you can get a cab at a decent price, i have 2 cabinets that i got for about $300 total, not the greatest looking, but working; and 2 mvs boards at about $100 each. aes gaming is very expensive, and even with an !arcade! convertor (allows mvs carts to be used on an aes) but there is no guarantee that all games will work with it. and also, the mvs is officially dead (as of about 2 weeks ago), so keep that in mind as well. also, figure out what type of board you want (1, 2, 4, 6 slots) well as what type of games you may eventually want as well. (only ex. rage of the dragons has a problem on all but the latest 1 slot, the mv-1c, but works perfectly in a 2, 4, and 6 slot board)
from what i've seen, find any type of place (arcade, laundry mat, etc) that appears to have one that no one even uses and talk to the owner. or check out
http://www.superauctions.com/ and see if you have one coming near you.