What is the benefit of a contract when you buy a car in cash
You don t want to lose the benefit of a good price on a new car by paying too much for financing, for an extended service contract, and for rustproofing, paint sealant, and other add-ons. You also don t want to get too little for your used car trade-in, if you have one.ut the best way to get a solid estimate of your used car s value is to take it to several new car or used car dealers to see what they will pay you for it. Simply tell each dealer that you plan to sell your car and that you are getting offers from at least 5 dealers.