As YOU just posted in another thread for someone trying to sell their system :
Computer components depreciate immediately when you open the packaging.
I would say at best it would be worth 70-80% of retail value if you parted it out, less if you try to sell whole.
Usually you can get more for your money and sell quicker parting out.
Which by your own words would make this worth about $290 - $325 or less if trying to sell as a system !! (and does MS allow the reselling of their MSDN authentications to users that are not a part of their developers network (since these licenses are sold as a per user license licensed to the MSDN subscriber not a retail license) they would in essence be getting a pirated version even though you may be able to use them legally I doubt they are able to be resold legally - so basing the price on including it doesn't seem to add value (unless the buyer doesn't mind using an illegal version of course))
MSDN subscriptions are licensed on a per-user basis. One person can use the software to design, develop, test, or demonstrate his or her programs on any number of devices. Each person who uses the software this way needs a license.
So that software is not legal for use by someone who purchases this system -- Unless they are also a subscriber to the MSDN.
This computer will come with Microsoft Windows 7 Enterprise and Microsoft Office 2007 Enterprise installed and activated. These are the full, legal editions purchased through Microsoft System Developer's Network
Windows 7 Enterprise is not the same as the MSDN Subscription Software (which is for development and testing purposes only). However, it is purchased through the MSDN network though volume licensing.
I'm not a member of MSDN, so I am not familiar with the specifics of volume licensing. I got Win 7 Enterprise pre-installed on a computer I purchased locally. I was told that it was a legitimate license and was provided with keys.