While several factors can affect the cost of replacing windshield wiper blades, the average price is around $50 if you go to a professional mechanic (which is highly affordable compared to tie rod end replacement cost). Labor may run you about $25, while parts will average around $25. In the worst case, when your wiper’s motor is faulty, you’ll have to pay around $311 to $367 for replacement.  Windshield wipers motor cost ranges from $231 to $267, while service charges from $79 to $100. This estimate doesn't take into account the specifics of your car or your location, and it doesn't include any taxes or fees. Other maintenance might be necessary as well.