Even that cost and arrs aren’t strictly necessary. For those who like to binge their shows, most of them get a “complete” version on most good torrent sites once they’re done releasing (let’s not get started on the cousin-fucking yeehaw lissencephalic level of thinking it takes to release streamed shows weekly). Download those, watch them, preserve what you think you’ll rewatch in the future then delete the rest. So long as your machine has a good few terrabytes it’ll last some time.