A master purchase agreement is a legally binding contract between buyer and seller, and typically relates to buying and selling goods rather than services. How to properly fill out the Arizona Association of Realtors Resale Purchase Contract using Dotloop.I'm gonna break down all the terms and conditions so you can understand what it means and we're gonna fill that out so you can have a real-life example of it. Earnest money is usually paid out in one of two ways. First, it can be included as part of the down payment for the property. We fill in the terms the buyer is trying to accomplish closing date, amount of the offer, down payment, financing, that sort of thing. At this point, the offer turns into a binding purchase agreement. Neither you nor the buyer can back out of the deal unless the contract allows you to do so. In this program, under the lease-to-purchase agreement, a portion of the rent would go toward an escrow account to pay for closing and down payment costs. How do I fill this out?