I agree with TheOtherBob, you should post to rec.games.pinball. You can find a nice pin for under $1000, and can buy 2 decent older games for that much. If you want a DMD game, $1000 is at the bottom end. You probably won't find a decent Williams/Bally DMD game for that price, but a friend in Pittsburgh recently sold a good Data East Torpedo Alley for about $800. If you want an electromechanical game, finding a decent one for $500 should be no problem. I have about 30 pins now, and lots of them were under $1000.
PS-once you buy one, you may find yourself wanting more.