The Steam Machine isn’t even out yet, though Valve has begun sending out confusing emails about whether people are in the “queue” or on the “waitlist” for the device. That hasn’t stopped netizens from doing the inevitable, though: listing their reservations on eBay to make a quick buck. If you head over to eBay—or GameBay (?), since GameStop really wants to buy the online marketplace—and search for the Steam Machine, you’ll see a handful of postings for Valve’s upcoming living…