PandaDoc Pricing
PandaDoc's pricing looks fair and reasonable on the outside. Lots of features for not a lot of money until you realize you get no integrations until you 5x your original spend. That's just the tip of the iceberg.
They won't allow you to whitelist your domain until you're on their Enterprise plan which runs into the thousands. This means every proposal you send essentially comes from PandaDoc instead of you.
There are no custom domain options on PandaDoc which means you're just an advert for their service. This kind of "growth hacking" worked nicely for Hotmail in 1999 but it's not appropriate for professional business software. Every proposal you send will have "PandaDoc" plastered all over it.