Assuming its about the SaaS offer: you get an amount of free minutes according to the plan you are in, you can by extra minutes. You also can host the runner yo

Assuming its about the SaaS offer: you get an amount of free minutes according to the plan you are in, you can by extra minutes. You also can host the runner yourself, and even do that with the autoscalling (it's the same we use to run the included runners). So you can opt for convenience (paying by minute) or can run your own infrastructure to optimize on cost, if you wish. The runners are very low maintenance, and theres even a kunernetes helm chart available.