Lightly used K601 for sale. No scratches, marks, or physical imperfections that I can see on the headphones themselves or the earpads. The elastic strings are still tight and springy. I bought these second-hand from a home studio liquidation two months ago, and the guy said he had never even used the headphones. But he didn't have the original box (there's nothing in the box anyway). Comes with the 3.5mm adapter.
Price includes all fees. Will post pictures later tonight.