I totally agree with the system 11 thought. You might consider one of them. Not sure where the pricing is though as I have had most of mine for some time now. BK2000, WW, Taxi, ES, SoF and whole lot more. again you will have to ask the other pinsiders for pricing estimates...
Oh! I love Black Hole. I do believe a nice example of this can be bought for under your amount. If you like gambling kind of stuff perhaps High Roller Casino. It is DMD and in my opinion a good player