Rebates make buying a home less expensive...In purchases where buyer's brokers are offered half of a 5% commission, they may compete on price by refunding a portion of their commission to the homebuyer. A 1% rebate on the median-priced home would save the homebuyer $1,843.

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