I have a couple of cheap atom based windows computers I got off aliexpress on TVs around the house. Mainly use with the camera software to watch the driveway for pizza arriving. They work ok for what they are, 2 gigs ram and I think 32 gig of slow emmc storage that is still faster than spinning rust drives. I paid about usd 130 each for them a while back, seems prices are pretty stagnent on them and theyve not got cheaper. Way more than an android box but you will at least get updates on it for a while. Some concerns with 32 gig storage going fowards with windows updating so if I did it again I would go for a 64 gig one.

windows UI sucks for use at a distance, you have to use a mouse since nothing has support for the arrows and OK like real consumer electronics gear has on it, but its somewhat workable.