Hahahaha, what a joke.

Sorry, not interested in 24hr on call until they start talking $100k+. That's asking a lot of someone.

Sounds like they need multiple staff, actually. You can't do on-call without having a rotation. What happens if Bob gets hit by a bus? This tells me all I need to know about them. Typical SMB "leadership", they lack any concept of managing systems - be it IT, finance, mechanical, whatever. All systems have their management models.