so they are selling cent of their CPU time for a minute's worth

> My guess is that once you think about this some more you will decide it is worth it, and probably spend some time trying to drive down your minutes/month a bit. But at $140 a month, how much time is that worth investing?

It's $140 right now. And if they want to squeeze you for cents worth of CPU time (because for artifact storage you're already paying separately), they *will* squeeze harder.

And more importantly *RIGHT NOW* it costs more per minute than running decent sized runner!