Can I represent him?

What you are describing is a "dual agent" role, where the agent represents both buyer and seller.

"The man who represents himself has a fool for a client" was said about attorneys, but it could be said about a new investor representing himself in a sales transaction.

Sounds like strategy call would make most sense to see what your goals are with REI and being an agent to determine if the organization I represent aligns with the direction you are looking to go. 

The reason to have comparables is if you are representing someone or perhaps purchasing a house for yourself to live in.

However, when I requested our EIN the letter stated, "Based on the information received from you or your representative, you must file the following forms by the dates shown.

Originally posted by Alison Robinson:Hello all,I am in immediate need of a Commercial/Residential Property Management Company representing owner-landlords on the South side of Chicago.

The National Association of Realtors.That said, I will not be signing an Exclusive Right to Represent as an established real estate investor, and I’m honestly a little annoyed to be asked.I also realize this may qualify for Reddit’s AITAH channel.

Patricia,I wouldn’t rely solely on the seller’s agent, as they are only sharing information provided by the seller and represent the seller’s interests, not yours.

Not necessarily to represent buyers and sellers but more so for my own research.