Beyer's upcoming lineup shake-up is paying you dividends on this purchase. The T90 will be discontinued next year. This is an unopened box, brand new pair (and I'm an authorized dealer, so you get full warranty as well).
Free shipping in the continental USA and no PayPal fees.
Some people call the Beyerdynamic T90 a "poor man's T1" and at this price, it's a steal. The T90 does indeed offer a taste of Beyer's top-of-the-line T1 magic.
The T90 is an excellent all-arounder - solid bass (not quite enough for bass-heads, though), beautifully clear mids and spacious highs that are never shrill. They scale up really well with better electronics and are super-comfortable (like all Beyers). The open-back design of the T90 gives you a great soundstage and acoustics.