Sure, but that shouldn't be a time-dependent charge. If my build takes an hour to build on GH's hardware, sure thing, charge me for that time. But if my build takes an hour to build on _my_ hardware, then why am I paying GH for that hour?

I get being charged per-run, to recoup the infra cost, but what about my total runtime on my machine impacts what GH needs to spend to trigger my build?