You are limiting your choices severely by limiting your max to $1000 for a working DMD.
You will be in the older DE, Gottlieb DMD category with a couple of Sega, B/Ws (maybe).
from Mr Pinball ....
Lethal Weapon 3, 1992 Data East: 1000
Shaq Attaq, 92 Gottlieb: 800
You would probably find a Last Action Hero in this range.
Consider increasing your max by $500 and you will quadruple your possibilities - Demo Man, Judge Dredd, Rocky and Bullwinkle, possibly No Fear, Jurassic Park, etc.
Good luck. I am in your area and have seen lots of DMDs pass through here with very few in the 1k range unless they needed work.