Download INTERNATIONAL SALE CONTRACT sample in Word format. Fill in the blanks and choose the terms of this international agreement that best suit your needs.A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. This form of purchase and sale agreement provides guidance for purchasers and sellers in Massachusetts commercial real estate transactions. Many REALTORS® contact the National Association looking for real estate forms. 3. Property. Fill out the street (physical) address of the property the buyer is purchasing. Include any unit or apartment number, if applicable. A Massachusetts real estate contract is a legally binding contract executed between a buyer and a seller for the purchase and sale of real property. An exclusive buyer broker agreement promises a buyer complete loyalty and creates a fiduciary relationship. At which the deed to the property is to be delivered and the purchase price paid.