How can it be priced as low as $5 per month?

We bake your development environments using Docker, thus you only pay for what you use. That’s why we can keep the costs down and you happy at the same time.

Providing you with a managed environment, allows us to save resources when they’re not used. This helps us make sure your SourceLair projects get started blazing-fast and that things like your filesystem, autocomplete and real-time error reporting are not constrained by your project’s resources.