I don't know if you are still trying to sell this but I thought I would make an offer. I can give you 1 million gold and a level 2 guild on US Argent Dawn Alliance. I would not go first, I would let you join the guild and see the 999,999.99 gold in the bank but would have to wait until I am in possession of the hilt before I made you GM of the guild. I have dealt with many people on these forums, many trades involving codes, I am sure getting some people to vouch for me would be quite easy.
A note on my offer - I know you are looking for more than 1 million gold but based on the fact that theres still buy it nows for 700$ on ebay, bid auctions ending in the 600$ range and also sellers listing at 700$ that have accepted "best offer" (which means they settled for less than 700), I think 1 million gold is a fair offer for this code.