How much licenses I will have?

[Oleg Islamov]

Will I have 110 licenses in total with existing 10 licenses, when I buy 100 licenses ?

Нow long can I use a developer licenses on the test system?

[Olga Videc]

Hello @Oleg Islamov 

If you buy 100 licenses you will heave 100 licenses 

The developer license will expire when your commercial license expires

"Developer licenses are available to existing commercial and academic server license holders (not available for cloud or server Starter products) who wish to deploy non-production installations for use in testing and development of the Atlassian software (e.g. version upgrades, customizations to the software, etc) that should not be done on a live production instance.

Developer licenses can also be used for non-production installations of the software deployed on a cold standby server.

This license is provided free of charge and the maintenance expiration of this license will be synchronized to the maintenance expiration date of your product."

https://www.atlassian.com/licensing/purchase-licensing#licensing

BR, Olga