anyone bought from them before? currenty bought a pair of ath-m50 and its been 4 days and he didnt even ship the item out. Anyone knows if theyre legit?

Hello everyone.   I recently bought the Audio Technica ATH-M50 from eBay, and I would like to know if any one you had experience with this particular seller (wether its fake or not)   http://www.ebay.com/itm/121071831813   Just want to know if these are fake or not (from people who know...