This is a good price for the original Charmed tv series collection which contains all 8 seasons. It is cheaper to buy this than subscribe to a streaming service to watch it there as you are unlikely to watch all 173 episodes in 2-3 months (the subscription cost).
Yes this is digital. Yes you don’t "own" it like a physical disc. Yes some of you acquire things by other means.
This isn't buying, it's more like long term rental!