A Sales Agreement is a legally binding contract between a buyer and a seller to outline the terms of a transaction. Use this sales agency agreement template when hiring another company to sell products that you own or manufacture.Grant Deed on or about the date of this Declaration in the Official Records of San Bernardino County. Use this free advertising agreement template next time you engage a new agency or freelancer for advertising work. Use a sales contract to ensure a frills-free transaction whether you're a buyer or a seller. Get started to have successful sales transactions for business. An advertising sales agreement is a legal contract between a seller, often a media outlet or publisher, and an advertiser. SAN BERNARDINO (909) 764-1035. Home - San Bernardino City Unified School District. Fill Out early Sign.