Hey Chicago Cheap-o's,
Last weekend I went to Maxwell Street market and was suprised by the number of games vendors I saw there.
http://maps.google.com/maps?f=q&hl=e...19999&t=h&z=16

I counted no less than 10 vendors with gaming related stuff to hawk. So if negotiating for your next game sounds like fun, give Maxwell Steet a shot.
And if you don't find what you need there's a new GS up the street next to Whole Foods.
The market is on Sunday's from about 8ish until mid-afternoon.