If you want to buy new T1's, this guy is great - http://www.ebay.com/itm/Beyerdynamic-T1-premium-Dynamic-Headphone-SAVE-BIG-/121092639272?pt=US_Headphones&hash=item1c31af0a28. You don't have to worry in my opinon.
Talked to him few days ago. These in link are practicaly new just unpacked to show ppl. As for sealed brand new, he can make you much better price than 1400$ if you ask him.