No, you won't!
You can invite unlimited team members, including on the Free Plan, at no extra cost. To do this, go to your account's Team section.
Your monthly subscription quota is shared among all team members and you can also set individual limits.
On top of this, being part of a team allows you to collaborate better, sharing resources like bulk actions, campaigns, and leads.
To learn more about how to add new and existing users to your team, as well as how to manage each role within the team, we recommend checking the following article: