You can also get a free Kodi install for your PC. It runs the apps as an android box. Great to play with before buying a dedicated box.
In fact a friend ended up just plugging his laptop into the TV.
I had actually built a $600 home theater box to run SageTV about ten years ago. I ran KODI on it for awhile, and it worked fine.
The advantage of the Android TV box over that was my SageTV box had a 350 Watt power supply, so it was costing a lot more than the Android TV box to run since the TV box is basically using cell phone componentry.