The cost of replacing an alternator can vary significantly depending on the make and model of your vehicle, the type of alternator you need, and the labor rates in your area. In general, you can expect to pay between $300 and $600 for a new alternator, and between $100 and $200 for labor.
It's important to note that these are just ballpark figures and the actual cost may be higher or lower. If you're planning on replacing your alternator, it's a good idea to get quotes from several different auto repair shops before making a decision.