An option to purchase is an agreement that gives a potential buyer ("optionee") the right, but not the obligation, to buy property in the future. With an abundance of convenient locations and a handful of options to customize your monthly car rental, Avis makes renting a car in LA easy and affordable.Car rental in Los Angeles International Airport (LAX) with Enterprise. Simply print your rental agreement to bring with you, and you are all set! Compare the car rental prices with Carla and find the best one for you. Part 1 of this Legal Guide explains RTO transactions and what you (the renter) need to understand before you sign an RTO contract. Our flexible policies allow you to rent a vehicle for as long as you need, whether it's for a weekend or a season. Tomonth agreement is a 30day contract. Each time you pay rent, you renew the contract for another 30 days. You may purchase optional CDW for an additional fee.