Looking for a P&C Independent Agency paying good commiss

I recently was licensed as a P&C producer in Michigan. I started working for an Independent Agency, however I feel that the commission offered to me seems really low (50%) of the total commission. I was recently talking to a friend that mentioned that there are company's out there that someone can join and pay a monthly flat fee, is this true and how much would this fee be? And if so, who are these company's?