A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. The Real Estate Purchase Contract is a six-page document we use when we write an offer to buy a home.It consists of two sections. This is a legally binding Real Estate Purchase Contract ("REPC"). Utah law requires real estate licensees to use this form. You must also come to the Salt Lake. Flat Fee MLS Listing Salt Lake City Utah. A good BBA will be for a specific listing. As long as you have that written out, you should be okay to solicit other properties from other agents. Real estate contracts are complex and filled with terms that can have serious implications if misunderstood.