The Gold Box deal of the day over at Amazon today is a Certified Refurbished Kindle Fire for only $139 (refurbished usually sells for $169); a new full-color Kindle Fire ebook reader is typically $199.

Note – this deal is valid only for today, Thursday, March 29, 2012, til 11:59pm PST while supplies last.

Per Amazon:

Limit 5 per customer. A Certified Refurbished Kindle Fire is a pre-owned Kindle that has been refurbished, tested, and certified to look and work like new. They come with the same one-year limited warranty as a brand-new Kindle Fire.

– 20 million movies, TV shows, songs, magazines, and books
– Thousands of popular apps and games, including Netflix, Hulu Plus, Pandora, and more
– Amazon Silk – ultra-fast web browsing over built-in Wi-Fi
– Free cloud storage for all your Amazon content
– Vibrant color touchscreen with extra-wide viewing angle
– Fast, powerful dual-core processor
– Favorite children’s books, graphic novels, and magazines in rich color
– Amazon Prime Members enjoy unlimited, instant streaming on thousands of popular – movies and TV shows. Learn More
– Amazon Prime Members choose from over a hundred thousand books to borrow for free.