It's a common misconception that cost is directly related to how useful a device is. This article focuses on supporting accessories -- devices that improve the use of other gadgets, enhance your life or minimize inconveniences. In some instances, they're outright essential.
Did you imagine buying a 4K TV for less than $400 a few years ago? This TCL unit has very positive user reviews, it's 55" HDR10-capable and its smart TV portion is powered by Roku. Demand is high, but you can still buy if you're willing to wait for it to ship.