So, about the Duo.  It's a gray PC-Engine (JP) Duo, with no real cosmetic blemishes and all the necessary cords.  It plays Hucard games without any problem; I was enjoying Ninja Spirits the other day, even.  HOWEVER, the CD Drive does not spin for some reason.  Well, it spins for a while.  Then it eventually stops, and the system says "Please Set Disc!!!" or something like that.  It's pretty sad.  As such, I will sell the system for the low, low price of $60, OBO.  The site oldschoolgamer.ca can repair it for a reasonable price, and there's probably a couple others out there that can do it if you search.
Also, I'm selling Ninja Spirits (complete, w/plastic slipcover and styrofoam rectangle) for . . . $15.
Shipping will be calculated (PM me a zip code), and the service will be USPS.
my ebay account name is crazybaconlips.  I have 100% positive feedback, with 32 feedbacks total.