Purchase Agreement - Standard Form. Click here to download a Standard Purchase Agreement.This Purchase and Sale Agreement ("Agreement") is made and entered into between DMark. THIS PURCHASE AND SALE AGREEMENT (the "Agreement") is made as of the Effective. The document is an agreement for sale between Ms. Sowmya Lakshmi (Vendor) and Mr. A.C. Hari Prasad (Purchaser). This document will provide a guide to the rules and regulations for the preparation and approval of survey plats and legal descriptions.