I sold the one Duo-R I had with a new laser (that I replaced) for $160 + shipping. Sound circuit was solid and didn't need replacing. I included Far East of Eden: Kabuki Den, La Valeur, and Final Zone 2 (US) plus Youkkaidochuuki Hueycardo and one controller/hookups. I think I also included a US Keith Courage (Because I had about 5 and was getting sick of looking at them) at the buyer's request. There was no manual/box.
This was the last Duo I sold; I now have a black PCE Duo that has been everything-fixed.
Not a criticism; Just for reference.