Scrap is by weight.
Around here you obtain car and good title. To get best price. Remove aluminum wheels, radiator, battery, cat converter.. These are worth more and are sold seperately. Deliver car to scrapper. It is weighed and title checked. Around here thumbprint and waiver signed. Then weigh radiator, aluminum wheels. Battery core is around $8.00, Convertor $50.00-150.00. Some places pay cash. Some pay with Debit card.