The fastest way to determine if your starter motor requires attention, is to confirm that your battery is fully charged, and that you have the correct key for your car. They’re several reasons why you may not need a Starter Motor, and that can include: your cars key is no matched to its computer, and the battery is flat. Other then that, if you can hear the engine attempting to turn over, but its unable to turn it over fast enough, then you can assume you may require a second hand starter motor.
If you have concluded that your starter motor seems to be the problem, then take not of your engine number / take a photo, whether the car is automatic or manual, and bring this information down to us. Call ahead to get a second hand starter motor price.