Under the laws of all states in this country, a multiple listing service placement is simply an advertisement and not an offer to the general public that the price stated would be accepted. The reason is that there are many other conditions with respect to  contract formation other than price. Examples are terms and conditions of the sale, time to close escrow and the like.If you believe that there was false advertising concerning the listing of the property you are writing about, you can make a complaint with your state's department of real estate against the particular real estate agent.