Each purchase for both the Logo Only packages and the Brand Kit Subscriptions is for one brand. If you have sub brands with different names you would need to make a separate purchase for each brand name.
If you have one brand with different sub categories, it is possible to only have to make one purchase, if the main brand name stays the same and the sub category name can be added to the slogan, this would prevent you from having to purchase more than one logo.
For example, You could have both of these logos under one purchase:
However, this would require a separate purchase:
If you aren't sure whether your particular needs can be met with one purchase or multiple purchases please contact our customer success department at firstname.lastname@example.org.