The Kindle Fire HDX 7" 16GB Tablet drops from $229 to $199 to $179 plus free shipping at Staples.com when you use coupon code 26278 during checkout. This was the lowest price we found by $20. This is the latest version of the Kindle Fire HDX and runs on a 2.2GHz Quad-core Snapdragon processor with 2GB of RAM. You can also use the coupon code to get the 32GB version for $219, also the lowest price by $20. Sales tax is charged in most states.