Take a look:
http://www.clubskill.com/Game_News/3154
Arcade Games That Pay YOU
Heh, Theres a point black shoot for cash in the local namco museum (arcade, not a dusty old garage with pac-man and the likes in glass cabinets:P) I can win most of the time on that, i've noticed if you win any amount of cash (£5-10 is most i usually win) then the second time you play it is impossible to win. So i just back off and come back later after the jackpots reset. It works in the same way that fruit machines/upright gamblers do. Where the chances of you winning are decreased the more you win.
I LOVE the skill games. I was really sad that virtually all the arcades closed in my city! When I went to Japan the first night I was there we went to the Aeon Shopping Center where they had a HUGE arcade, I spent hours playing the various coin stop machines(Mario Brothers and Capcom) and claw games. I had to buy an extra suitcase for all of the stuff I won lol.
