If you are a coach (or part of a team) you can create a Premium Team and select the user limit which best suits your team.
The different price options are calculated according to user limits and the coach(es) count towards that limit. You can upgrade the user limit for a current membership, from the Dashboard application, and you can also change the user limit when renewing your membership.
The coach accounts have team management options, access to detailed reports and billing access.
If you are an individual debater, you may opt for a Premium One which allows you to catch up to 250,000 articles and access to unlimited Congress dockets. A Premium One membership is priced at $25 (Extemp or Congress) and $35 (both apps activated).