The KN7000 that you refer to on Ebay @ http://cgi.ebay.com/New-Technics-KN7000-...1QQcmdZViewItem

is listed as new when in fact it is pre-used for $3989 (£2255) which is a buy now price with a starting price of 77$ BUT there are as yet no bids
The $1000 of extras is also dubious the 128 meg sd card of styles for the ex models was available to everybody free on the Technics.com and makes up for almost half of the $1000
I would not be surprised if it is still unsold at the end of the listing.

The KN7000 has been selling on Ebay in the UK for between £800 & £1000 ($1415 & $1769) pre-used without the 4 expansion boards.
The 4 expansion boards together (when you can find them) have been selling for £250 ($442)

The most expensive I have seen by a dealer is £1200 used ($2122)
The going rate for a trade in against a Tyros 2 is £1000 approx