Amazon is offering a limited time promotion of $40-$50 off select Kindle Fire tablets. Pitched around “Back to School” (yes, already), the deal applies to the Fire HD, Fire HDX, and Fire HDX 8.9 models. We’re quite fond of these devices and appreciate what Amazon has done in this space over the last few years. If you’re in the market for a new tablet, we suggest you consider one of these. In addition to the tablets, Amazon is discounting accessories by up 20% with up to 80% off Kindle textbook rentals.