GitLab CE (Community Edition is Free) and is truly great we use it in our own internal software development process.

However for a bigger enterprise they require more functionality here is a comparison of the differences between the Community and Enterprise Editions.

https://about.gitlab.com/features/#compare

Several pricing options for EE but essentially the base cost is $39 /year per user.

https://about.gitlab.com/pricing/

The gitlab import is really SLOW and there is no clear indication of the progress. Try to import https://github.com/torvalds/linux.git, it takes forever.