Here is what I'd do:
1) Find a used one on Ebay, there are bound to be a load of them soon since Woot just sold them unlocked a few days ago. In a week or so there are bound to be a lot unloaded there.
2) Sell yours on Ebay, describe the problem and let someone else deal with it. Sold AS-IS these things are still worth something. In the best case there will be a $50 price difference between your new one, and selling the old one.