Setting up the statuspage.io, monitoring it, keeping things as they should, adding new stuff to monitor thats not a task one of those 5 will be doing regularly? And what if he does a poor job at that? You end up with what you say, the same buggy level of monitoring. So what _is_ the excuse not to make your own and pay significant amounts of money to a third party?
I say 18.000 is a lot of money for a service that reports your outages (good 3 month salary here, and in three months one can code a lot). And if you do it yourself you have all the freedom of choice how you monitor what you monitor how you report to your users instead of relying on the options statuspage.io offers, there is no limit
And why would your own monitoring be more buggy then some setup a third party deems to be ideal? You can make a perfect fit, gives you another view on your own products etc. Full control is key, in house solutions, not saving money.
