I fully agree with SDR; “In many cases the result will be that the listing broker simply gets the CBB (the cooperating commission) so while you think you saved 2-3%, in reality you did not. “.
Even for brand new house, if you don’t have buyer agent, the listing agent will eat up buyer’s 2~3%.
I would recommend, as a buyer, take an agent with you, negotiate a good split of the commission; As a seller, do your homework, get it listed while reserve 2~3% for buyer agent, and make it FSBO.