You enabled GitHub Actions, set up a few workflows, and moved on. Smart move. But did you ever check what it's actually costing you?

Most developers don't. Until the bill arrives.

The Problem Nobody Talks About

GitHub Actions is brilliant. CI/CD straight from your repo, zero setup overhead, tight GitHub integration. It's one of those tools that just works — so you stop thinking about it.

And that's exactly when it gets expensive.

Here's how it happens:

You start with one workflow. Then two. Then a matrix build.

You add a scheduled job that runs every hour.

Your team grows. PRs multiply.…