This is interesting. Someone who purchased a $750 buydig is trying to sell it for $970 on ebay.
If that person is in this thread please be advised that Ebay charges a 10% fee. http://pages.ebay.com/help/sell/fees.html So subtract $97 from the purchase price. Paypal charges 4%, so subtract $39. Shipping is $20 or so. $970 - $97 - $ 39 - $20 = $814 the amount of money you'll receive. So you'll only make $814 - $750 = $64 profit. That's assuming someone pay less than your asking price (I see you're taking offers).
I would have messaged him in ebay but I don't think that's allowed.
Headfi is often good place to find deals on used T1s.
They are generally in better condition and priced lower than other places I've seen them.
Buying stuff on specialized forums and selling on ebay is pretty common though.
As well as vise versa....