I'm selling my HDP-R10 reference audio player, which in case you don't know is a slightly improved version of the iBasso DX100 player (see http://www.hibino-intersound.co.jp/ibasso_audio/3289.html). It is in pristine condition, only one month of use. The reason I'm selling it is because I do not use it as much as I thought I would and I could use the money.
I also have a pair of new, pristine condition Sennheiser HD 600 to pair up with this baby (also one month of use).
Buying at Amazon it would cost you around 1,200 dollars. I'm selling the iBasso in 550 dollars and the HD 600 in 300 dollars, or get both for 750 dollars.
I live in Mexico so you would have to cover the shipping and handling fees, unless you pick it up here while visiting.
Let me know if you are interested.