There are two engine options in your car, the cost varies a little. The parts will be $220 to $275 the labor could be two or three hours. Air conditioning systems are temperamental to work on and I suppose in the auto repair industry have the highest repair dissatisfaction rate and come backs. The system has to evacuated, the refrigerant stored or replaced after repair, the system should be flushed, properly checked for leaks and then repaired and retested, it depends what other problems are found and how diligent the person is repairing the system. Costs and estimates as you have probably found out vary widely.