Clarification about worker cost


I just created my first worker to server custom 404 page. I have since manually triggered the 404 page 2-3 times to check if the worker is working. The metrics though has me confused, is this an expected metric log? Will I expect a high bill for this?

There are bot that scrape when a new SSL certificate has been issued, which there is for each domain, and make requests to them. The best way is to disable the route on the worker and use a custom one.