I'm still trying to sell a pair of HD590s in excellent condition. There is only a slighly cosmetic flaw -- the "590" on one of the ear pads is slightly smudged. It comes with the box, manual, stock cable, and 1/4" adapter.
I also have a Stefan Audioart Vision One 8" replacement cable for them, but it will also work with the HD500 and 570.
I'm moving and would like to sell these asap. I'll let the 590 go for $100, and the Vision One for $50. Together, $140.