Last Action Hero (Data East)
Frankenstein (Sega)
Star Trek 25th Anniversary (Data East)
Tales from the Crypt (Data East)
Fishtales (Bally/WMS)
X Files (Sega)
Revenge from Mars (Pin2000)
Star Wars Episode 1 (Pin2000)
Star Wars (Data East)

are just a few more titles which are excellent value for money and great playing games at affordable prices.

Even a Star Trek Next Generation in project form for under 3 grand can be had, and sometimes u can get lucky on ebay and buy one for $3k which might only need rubbers n bulbs n a clean if someone is selling cheap for a quick sale, which is a great game.

Search ebay, gumtree and trading post often, as well as visit any pinball dealers in your area, because alot of people have alot of stock and sometimes u can be in the right place at the right time !  goodluck with your search....