I'm living in Japan now, and here, the market for headphones is great! A lot of stores with all the new headphones models where you can test it with your own source, but I didn't find good places to sell my used headphones!
I went to Ochanomizu, and found a store called Audio Union, but they offer very low prices to used headphones, then you cannot find a lot of models there
I tried the Yahoo Auction, but if you don't know how to read Japanese, you can find a lot of troubles there..
Anyone know a good way to sell used headphones here in Japan??