This document reveals to the buyer information regarding the existence of lead paint in the residence. This contract outlines the terms and conditions of the transaction, including the purchase price, payment terms, property condition, and closing details.Selling your Texas home without a realtor? I'm going to be showing you guys how to fill out a trek contract whenever you're wholesaling. B. Purchaser desires to purchase the Property and Sellers desire to sell the Property, all upon the terms and conditions set forth in this Agreement. Purchase and sale agreements are important documents that outline the details of a real estate transaction between buyer and seller.