Got it, thanks for the info! Yep, for sure dummy accounts is not the way to go as that would be the more expensive option. We are thinking of some other agent options - particularly for servers, that could help reduce cost or possibly free up those...
I'd be interested in knowing more about how you're managing devices - specifically what's getting you dangerously close to the 3 systems per device limit (ephemeral devices in an ASG, for example). We're thinking about ways we can help better here.