The math from lesson 3.2 already debunked this one, but the myth is sticky enough to deserve its own treatment. Here is the simplest framing.

If an agency closes a brand deal at 2x your solo rate and takes 15 percent commission, you net 70 percent more than you would have earned solo. Specifically: a $10,000 deal at 2x your $5,000 solo rate, minus 15 percent commission ($1,500), nets you $8,500. That is $3,500 more than the $5,000 you would have closed alone.

The objection "15 percent is too high" assumes the streamer would have closed the same deal at the same rate without the agency. They would not have. That is the entire point of the agency. The 15 percent is paid against revenue that would not exist without the agency.

The version of this myth that has actual merit: "15 percent is too high if the agency is not adding value." That objection is fair, and the answer is to evaluate the agency before signing using the 6-point checklist in Module 6. If the agency cannot prove they have added 30 percent or more in incremental income for comparable creators, the math does not work and the commission is not justified.

Commission is not too high in the abstract. It is too high if the agency is not earning it.