

$50/mo management is not going to be especially proactive. At best you’ll get updates for things that they can automatically update. They’ll hopefully make some optimizations to the server config when you first take them on, which is sometimes helpful but not really valuable on an ongoing basis.
The primary purpose of lower end management services is when something breaks that an untrained person doesn’t know how to fix, they’ll at least try to fix it for you. If that sounds worth it to you, then it’s only a matter of how good are their technicians / what problems are they capable of solving, and how quickly can they fix things when they break.
If you need or expect specific ongoing activities be done to your server, they need to be specifically listed out. Making at least some effort to check that backups are still working, coordinating repairs with the DC when a drive falls out of raid, updating / patching OS level software, all seem like things you could expect at this price level, provided they in fact promise to do those things. On the other hand, something like, someone checking the response times of key web pages, and investigate causes of slow page loads when they occur — I doubt a $50/mo management package will address that. And if they don’t advertise that they do something, assume they don’t.