20$/year is still cheap compared to other password managers, but yeah, the lack of transparency is worrying.

Keepass is free?

I can’t think of a reason to choose Keepass over Vaultwarden.

The person you’re replying to already gave you one: it’s free.

Second: its not a prime target for attack like centralized, hosted webservices are. See: LastPass being cracked and people’s login data stolen… Twice.

Yes, it is cryptographically superior to LastPass, and attempts to design around their flaws - but the threat still exists because its a very tasty target on the open internet for cybercrime.

My little Keepass DB synched over personal VPN by Syncthing? Much harder to find a vector for attack. But it does require more moving parts and maintenance.

Each have their pros and cons.

Every pro you listed is applicable to Vaultwarden as well. But I assume you misread it as Bitwarden.