I got this from my PC a long time ago, I never used it as I already had a Windows 7 key.
I'd like to sell this for $20 USD which is 1/5 of the actual price of the key. The reason it's not as cheap as the other sellers is because this is a legit key that won't be cancelled eventually. I can go first, if you're not as trusted as me we'll have to use escrow or you'll go first.
Cheers.
You got a edu vouch few time ago
https://bitcointalk.org/index.php?topic=1321638.0 . proof us that the key that you are selling actually belongs to you and it is not edu or msdn key which stops working after few weeks