I have for sale a PC Engine Duo-RX console with six button controller complete in the original box.
This system has been modified to play US games in addition to the Japanese games for which it was made. A 'big green driving board' adapter is included for playing US HuCards. This adapter is not as high quality as the Kisado and Mirai adapters (selling for $100 at TZD), but it gets the job done.
NO MODIFICATION HAS BEEN MADE FOR PIRACY purposes. In fact, the PC Engine and Duo (and Turbografx) never had any piracy prevention to begin with.
$200 + $15 insured shipping.