Amazon.com feels really badly for you if you bought an HD-DVD player from them in the last few month; so badly, in fact, that they want to give you 50 bucks.
If you bought an HD-DVD player before February 23, 2008, you should have received an email offering a 50 dollars coupon to spend however you want on Amazon for the next year. Yes, that includes the 360 add-on.
The email reads, partially:
New technologies don't always work out as planned. We at Amazon.com value our customer relationships more than anything and would like to support customers who purchased these players by offering a credit good for $50 off any products sold by Amazon.com.** Just use promotional code [redacted] when checking out. The code is valid through April 9, 2009, so you have plenty of time to use your credit. Purchases from third-party merchants on our site are not eligible