That's without storage. They are charging $750 each for 24tb HDD's, so filling it up brings that cost to $16k. Only need to run it for 13+ years and have zero HDD failures in that time, and then pay for all the media you are going to load it up with. Not exactly sure this would be cheaper or easier than just paying for streaming services and cancelling them when you don't need them.
You don't have to buy from them, you can get third party hard drives. Although those are expensive too