Months after being apparently retired from Amazon’s e-reader line, the 9.7-inch Kindle DX is back in stock. Amazon has brought back the DX for $299, reflecting the price drop that was implemented late last year. The Kindle DX was apparently discontinued back in October of 2012, shortly after Amazon announced the backlit Kindle Paperwhite e-reader and a new line of Kindle Fire tablets. At the time, Amazon’s vice president Jay Marine said while the company would not abandon the Kindle DX, it was “pretty much done with it.” Its original textbook market had been co-opted by 10-inch tablets, and the company was also dropping its Kindle Touch models as it updated the product line.