40 states allow buyer commission rebate

just google it 

Buyer rebates are legal in 40 US states as of this writing, including New York State where our company was started. 9 states have an outright ban on commission rebates due to strong lobbying efforts by the real estate community: Alabama, Alaska, Kansas, Louisiana, Mississippi, Missouri, Oklahoma, Oregon, and Tennessee. The 10th state, Iowa, prohibits rebates when there are two or more real estate brokers on a transaction.

https://www.hauseit.com/getting-buyer-agent-commission-rebate-explained/