I hate people who anser questions like I'm about to answer this one:
Build one.

$300 is a LOT of money. You could EASILY build one for a LOT less than that.
Either that or look locally. NY has to have a lot of old jukes...somewhere..

Sorry to answer a "how do I?" questions with a "don't" answer...I usually leave that to ceartain others...but $300 seems like WAY too much to me...I just finished building my first one..I already had the PC and moitor and keypad, but I would guess you could build one for under $300 pretty darn easily.
Allroy