I’m not saying they are paid perfectly fairly, but the good realtors do a SHITLOAD of work that you aren’t seeing. This argument is no different than “why do we pay IT guys so much”. It’s not because it takes me 3minutes to reboot the computer, it’s because I have years of experience that leads me to that decision quickly. You also sound like an extremely easy client.
And 50k? At a 4/3 which is pretty typical for a buyers agent (at least in my neck of the woods) you bought a 1.5mil house?