Many thanks for your advice.   In Japan,Used 5EB is 20000yen (=about $250!) So,I think that product is so cheap.   Thank you very much! :D  

Hello everybody. First,I do not understand English so much.Sorry.   I found "Ultimate Ears Super Fi 5EB" on eBay. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270744960397&category=112529&_trksid=p5197.c0.m619#ht_1150wt_1139   I think this product is inexpensive($80). Is this...