Gavin, I have a Bally Power Play for sale.  Had it listed for $1,600 on this forum (http://aussiepinball.com/index.php?topic=7255.msg96087#new), and have just put it on eBay with a starting bid of $1,099.  There's a fair amount of detail on the thread, but if he is interested please let me know soonish, as the ebay listing has just been listed.  Cheers, Steve