Our best tools are just $10 per product. Perfect for startups and small teams.
Atlassian is breaking the news and giving away licenses to their products (including JIRA and Confluence) for $10 each.
$10 buys you 10 users. Forever. 10 users is the great cap for the most startups I know. Even if I'd be asked what is the best users cap, I would say 5 or 7. They give you 10.
The only downside that this is the price for downloadable versions. Unfortunately, we don't deploy much nowadays, as we prefer hosted solutions. Having a lot of headache with building something useful, we would prefer not to have this headache with "running" something useful. :)
Give us hosted solution for under $10/year and we are sold. Forever.