This may sound like doing business with a kidnapper. :P That King of the Monsters proto, maybe you could sell that at a low price to one of the fanatic collectors, provided that they release a specific NeoGeo romdump they're hoarding. (or even better, lend it to you so you're sure the dump is good). For example the neogeoprotos.com guy that claims to have Last Odyssey: http://www.neogeoprotos.com/games/last_odyssey.htm