Paying for mentor in your company?

[Tara Ballenger]

I just passed my real estate exam here in beautiful Portland, Oregon, and I'm looking for a company to hang my license with. So far I've interviewed with KW and John L. Scott, and I was a little surprised that they charge you for a mentor - 15-25% of your commission. 

I suppose I was assuming mentorship was a more organic kind of thing. Is it not in real estate? Has anyone here paid for a mentor within their company when they were a newbie, and if so, did it help you? Were they helpful and available?