Realtor agent commission rebate - 2% cash back (San Antonio)

Do you need a real estate agent to submit offers? I'm an agent offering any buyer 2% cash back at closing when buying a home.
For example, purchase price $250,000 x 2% = $5,000 credit at closing.
Home purchase price must be minimum $250,000+.
No other qualifications.
Serving all of Texas.