I think #[2] and team provide good value for fees, but I imagine they will lose greater than 75% of current filter users at that cost.
Subscription models usually start low and grow costs as subscribers plateau. I don’t see 10,000 sats as low but, I don’t know their operating costs, so maybe 10k/month is low 🤷♂️
Regardless, I think fee per note is the future of #nostr
Early days still.