how much does it cost for a mechanic to fix a motor for your windshield wipers?

I have a 2003 Hyundai xg350l and the driver side wiper isn‘t getting enough juicegt;

On average a wiper motor is $100-$150. An hours labor should cover it. Check with your mechanic to find his hourly labor rate. I would also recommend genuine Hyundai parts. Some cheap aftermarket wiper motors are re-manufactured cheaply and often have a short life.