I suggest you build a MAME arcade cabinet. Mame is an emulator program that can run a bunch of old arcade game roms. Hit google up and search mame and you'll find a bunch of good resources that can help you. I'm saving loot to build one myself
Mame here (runs in dos, so to boot games you'll have to type manually, great for using in an arcade cabinet with a front-end program like mamewah, you'll understand once you start looking stuff up..) http://www.mame.net/
A friend of mine buys arcade games and pinball machines, he usually gets them off eBay and tries to find people selling locally so he can pick them up instead of having them shipped.
Here's one in Long Beach that's only up to $255 so far:
thats what im doing building a MAME cabinet for my bar,it can hold around 5,000 games....pinball is a lil harder, its best to buy a used pinball if thats what you looking for....