The only pro is that he'll be saving money on the commission, but those savings can quickly disappear and become costly mistakes when you don't have an agent looking out for you. If he insists on doing this without an agent, he should have a real estate attorney look over any contracts BEFORE he signs them, he should insist on a home inspection, termite inspection, he should know how to negotiate closing costs and inspection costs into the contract, etc. etc. Bottom line is that a real estate agent is paid for doing more than just showing the house - there is a lot of behind-the-scenes work that needs to be done and looked after from start to finish. If he doesn't know what he's doing he can wind up getting screwed over for far more money than what he is saving on the commission.