I was in te same situation as you . I had anonaddy (addy) , Bitwarden, Mullvad , and was using google drive for stuff I don’t care about privacy. The thing is that
Bitwarden : has more development than proton pass , but pass is great anyway and has all my needs even 2fa.
addy: has plenty of free things enough for me but started to find most of their domains are blocked to register a user. SimpleLogin from proton feels more developed and works flawesly with proton pass
Mullvad: is an execelent vpn , very simple , fast , cheap , but it has very few locations and mine particular one was missing, also it doesn’t have port forwarding . All these thins proton vpn have it.
cloud drive: I really needed something to store more sensitive data, proton drive now have a desktop client so it is perfect por my needs. If you sum all the services it will be like 8 or 9 dollars I think , and the benefits of the proton services integrations I think $13 is a win.