As always, you simply need to add three products that are tagged "Savings: Get 3 for the price of 2" to your cart. It's a mix-and-match sale, so you can pair two Blu-rays with a book, for example. At checkout, Amazon applies discounts to all of the items, and those discounts add up to the value of the cheapest eligible product.

Part of the Amazon Spring Deal Days sale, the best version of the 4K Fire Stick has been dropped by over 30%—making it a huge streaming bargain.

You can pick up the Amazon Fire TV Stick HD for only $20 right now thanks to Amazon's Spring Sale. Not only is that a $15 discount, but its only a couple of dollars more than the record-low price we've tracked.