Don't assume that because you are representing yourself that you will be able to get a 2-3% discount. The listing agent has a signed listing agreement for a commission. Just because you are unrepresented does not mean the listing agent will agree to reduce the commission in the listing agreement. Most likely you not having representation is just going to mean the listing agent is going to get both sides. So in theory the listing agent should be happy that you don't have an agent.

Now if for whatever reason the listing agreement only lists a fee for the one side then you might be lucky. But 98% of the time the listings are written in such a way that the listing agent is entitled to their fee, usually 5-6%, then they can share that fee with a cooperating broker. The only change the NAR settlement made was they can no longer advertise a fixed fee to the buyer's agent, and buyer's agents should get their client's to sign representation agreements.

If you are expecting to get a discount on buying a house you need to find one that is not listed. Because it is nearly guaranteed that the listing agreement doesn't give the seller a discount on commission if the buyer doesn't have representation.