Given 10% of final profit of 19,098.09848411 that would be over a million less any operational expenses. It's possible he made more since the cold wallet still has 10K in it, and the amount invested is roughly 5.5K.
I paid close to 20% commission.
This is because I paid commission on earnings which then disappeared during a whale run. (and I significantly reduced my investment - so it would take a while to come back)
If the site continued operating - then eventually I would get close to the 10% - because the site remembers the fact that I've already paid commission on profits I don't actually have.
I guess then that the effective commission overall was a little higher than 10%.