A team-hour is the net result of the work done by the team participating in the development and implementation of a given project, and not the individual hours. Each invoiced team-hour represent a more beneficial method to charge the customer, as each team-hour is comparable to 3-4 regular billable hours.
Here at Spingoo we use the team-hour method to bill our customers, as we are able to distribute tasks more effectively and present a more convenient way for billing.