I've got multiple physical egress points and multiple upstream providers so I do most of our monitoring myself. My home office (I work remotely) and phone -- the two places I receive alerts -- are both "off-net" so I've been looking for something simple and lightweight to "monitor the monitor" (and perhaps another important host or two) from outside the network.

I went to the Product Overview page, scrolled down, saw the pricing, and closed the tab. Perhaps I didn't learn enough about the product's features in the short amount of time I was on the site but the pricing just seems outrageous to me.

Edited to add background info: I'm evaluating alternatives to my current monitoring application, Opsview, which runs entirely from a single internal server. I'm looking for something that can be split across multiple servers in multiple sites (directly connected) so that I can monitor the (primary) monitoring system and be alerted if it is having issues (e.g. "A" monitors "B", "B" monitors "A").