I'm trying to quickly pull together some very rough
budget numbers for purchasing a full monitoring
system (network, server, security, facilities). Is
there a source for rough unit costs? If not, does
anyone have recent RFI pricing that they'd be willing
to share?
One would need to know a lot more about the specifics of your requirements.
My suggestion would be to invest money in qualified people to watch over something like opennms or (my favorite) a combination of alienvault and opsview.