“Today only!” reads the headline on the front-page of Amazon. They’re offering a 50% sale on their best version of the Kindle Fire HDX. Normally the 4G version costs $279 — but they’ve slashed its price to $139.

For a shortcut to Amazon’s two deals, point your browser to

tinyurl.com/HalfOffHDX

Amazon’s actually discounting two versions of their Kindle Fire HDX. For just $20, you can get the same table with a massive 64-gigabyte storage capacity. Of course, both devices also come with unlimited storage in Amazon’s “cloud”, so it’s not as important as it used to be. But the biggest advantage is their 4G network connectivity, which makes downloads much faster for movies and music.

Their screen resolution boasts a whopping 323 pixels-per-inch, so the colors always look rich and video. And of course, there’s a front-facing camera, so you can enjoy live video chats on Skype. But another great thing about HDX Kindles is they come with Amazon’s built-in Mayday button. Press the device, and a live Amazon operator can be viewing your screen with you and delivering free technical support!

Amazon’s discounting these because they’re the third-generation models (rather than the more-recently released versions). But it’s a great value for the price, and it’d still make a great Christmas gift. But if you’re interested, you’d better hurry. “This offer is valid today only, December 8…” Amazon warns on its web page, adding “or while supplies last.” I’ve always wondered if people purchase the discounted tablets — and then try to sell them later on eBay at full-price.

At prices like this, I’m almost tempted to try that myself!