T43 2668-6ZU pricing

[alexzabr]

Still regarding the T43 auciton I won few days ago on Ebay.
The particular T43 is 2668-6ZU model and the particular seller apparently sold several of similar units on Ebay (according to his feedbacks history) - all for either 1050$ (as in my case) or 1100$.
The item is advertised as brand new, factory sealed with full warranty and contacting the buyers of the units he sold in the past I was confirmed by thri satisfaction and that the laptops are up to their expectations.
The link to my auction is:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 6881709551

Now, I checked the same model 2668-6ZU sold new in retail online shops, specifically in eculidcomputers.com - it costs over 1700$ ! configured the same as the one I bought for 1050$.
Furthermore, there are lots of other T43 similarily configured and even higher that are priced considerably lower (starting 1300$ to 1600$) which makes me kinda wondering what can drive the 2668-6zu price so high comparative even to his better configured "brothers" ? (all carry same, 3 years internatioal warranty)

Any hints ?