My thought is that I would often save 3 % on a buy through having the license, but if
the supervising agent agreement was too costly or restrictive, this in addition to the upfront time cost (time is far more precious than money these days) would add up to make the overall value questionable.
The brokerage also agrees to
supervise the sole
agent to ensure they act within the law, in accordance with the terms of the
agreement, and within the boundaries of the brokerage policies and procedures.