As part of its latest deal of the day, Amazon has discounted the Fire HD 8, pushing the already affordable tablet into impulse purchase territory. At the moment, the usually $80 16GB model is $50, matching its Black Friday price. The 32GB model is also on sale. That said, you can get away with the 16GB model since the Fire HD 8 includes a microSD slot, allowing you to add up to 400GB of additional storage to the tablet. One thing to keep in mind is that the $50 tablet includes lock-screen ads. If you don’t want to deal with those, you’ll need to spend a bit more to get the ad-free version — tap the “Without Special Offers” button on the product page.