I have a pair of Used ivory colored On-Ear "Sennheiser Momentum" headphones. It is ~3 months old and I bought for 200$
Comes with everything it does new, box, papers, carrying case, headphone bag, 2 cables.
Asking 180USD worth of BTC/LTC/NMC/KDS shipped using escrow..
http://www.amazon.com/Sennheiser-MOMENTUM-On-Ear-Headphone-Iv/dp/B00DKPXTNCEDIT: Would also trade for R9 270, 7870, 7850 etc etc computer hardware in general.