ACCEPTANCE DATE: ("Acceptance Date"). SELLER'S INFORMATION: Seller's Signature: Seller's Name (print):.A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. An Illinois purchase agreement is a standard contract for selling real estate from one party to another. Below is a list of forms and information that may be required to complete a Request for Proposal Response. All the Commercial Contracts Pro forms, including ones you have edited, in one spot. Seller shall also furnish Purchaser with: (i) an Affidavit of Title in customary form; (ii) a Bill of.