A TurboDuo (US version) are generally pricey ($279 is no bargain, unless maybe if it's minty fresh and boxed/complete), and it'll need a region mod (either internal or external) to play PCE games and to use the Arcade Card Duo. Therefor, it'll be cheaper to get a PCE Duo/Duo-R/Duo-RX; don't shy away for the original PCE Duo if you can get one cheap enough or one that's already had the caps changed (a common problem, easily remedied by peeps here).