$50 off Wi-Fi versions of HDX 7 and HDX 8.9 today only!
I received a link to get $50 off of the Wi-Fi Only version of the HDX 7 or 8.9 today because I'm an Amazon Reward Card member.
I successfully used it on the 32 GB 8.9" just now. It only works through today, though.
I did try calling Amazon and asked them if they could just put a $50 credit on my account since I received my current HDX 8.9 in the last 30 days, but they said they weren't authorized to go over $30. So, as soon as I get the new one, I'll put it in the old one's box and send it on back.
The code is "KIN50ARC" if you're interested in trying it out.