Rebates can save consumers several thousand dollars in a single transaction. For example, if a broker offers to refund one-third of its commission to the homebuyer, the average buyer of a $300,000 home could save $2,500 to $3,000 (based on the 2.5% to 3% commission rates typically earned by the buyer’s broker).

US Department of Justice, https://www.justice.gov/atr/rebates-make-buying-home-less-expensive