You can also use a bank change or certified check. A bank change is a cheque that a bank writes to an account at another bank; This is an extremely safe method to transfer money. A certified cheque is a cheque guaranteed by a bank. In this case, the Bank confirms that there are enough credits in the account to cover the amount needed for the sale. Indicate the total purchase price of the vehicle. Add details of any payment terms in this area of the sales contract. Write down all agreed monthly payment amounts and the duration of payments, including the date of payment of the vehicle and the stop of monthly payments. Look for the added options and make sure that all the requested items are present. If you find a few items that you did not request at the time of purchase, underline that item and remove its amount from the total.