Github is really attractive with all the services that integrate into it. A service at $100/mo isn't much when you consider any labor time it saves ($50-$150/hour generally)
... and Stash is really attractive with all the local plugins that integrate with it, and allow you to do things that are really hard when you're stuck with web hooks.
Local installations don't cost hours-a-month to run.
Local installations don't cost hours-a-month to run.