Two low-cost tablets from Amazon just became even cheaper. The Kindle Fire HD 6 and Kindle Fire HD 7 normally cost $99 and $139, respectively. Just in time for the holidays, the two now have price tags of $79 and $109. Giving the gift of an Amazon product is valuable due to the core services built around them. Thousands of applications, movies, and television shows are available alongside the traditional Amazon shopping hub. Of course, it has the Kindle name and at its roots are a premium reading experience.