I picked this up a few weeks ago as part of a combo with a lens. Turns out it seems to work fine, but I already have two K bodies and don't need this one!
I ran a roll (of Adox CMS 20, which was probably not a great idea) through it, and everything looks ok in terms of speeds and exposure. I've never used another ME, so I can't tell you whether it sounds and feels ok too! The battery compartment is nice and clean, and the body is more or less fine apart from a few scuffs and scratches here and there.
The only issue: the seals are looking rough and the mirror damper even more so. Thankfully I bought a pack of 2 seal kits for my ME Super, so I can include one of them with this. I don't feel like installing it, though, so I leave that to you to enjoy!
I can't really promise that everything inside this thing is in perfect shape, but at least at the moment it seems good. So:
$35 including shipping and PayPal fees seems like a fair price to me. Comes with a comically short strap but no body cap, sadly.