I just sold a property that was listed with a "deal of a broker". The seller gave it to me because the agent she asked to sell it before at a discount did a discounted job getting it sold. I also brought her the buyer in 60 days from listing to sold. If you're serious about getting your house sold go with a professional. Would you ask your hair dresser to cut it for $5 and expect a $50 job?
If you understand that the commission is essentially split 4 ways, between the listing agent, buyer's agent and each of their brokers, then hopefully you will understand that 2.5% split as I just described is probably not going to attract a lot of agents and therefore few buyers to your listing.
I would like to say that buyer's agents do not pay attention to the commission percentage when they show their buyers different properties but there have been long discussions on this website that show differently.
I will show my buyers any property they choose to see( I rarely pay attention to the commission offered), but I am under the impression that not all agents will do that.
Make sure to check full experience, client reviews and past sales history along with a personal one on one interview at the agents office. Not only to learn about the agent but also see how active and what strenghts they have to offer you to get the most for your listing as far as marketing and advertising and promote your home for sale. Your selling price should factor in the amount of commisions so not to have any issues on what needs to be paid out. Remember you get what you pay for and finding an agent that settles on low commision will possiblly give low results. I wish you all the best in your real estate transaction.
And there's certainly no profit left for the agent. So I'd say "sorry, but no". I'm not really into working for free.