How much would it cost to replace the front brakes?

Sure, here is the labor and part cost, let it be known there are many levels of quality when replacing the rotors and pads. I will include how the job as well so you can see what work needs to be done. These are OEM prices you can after market and save money just don't go too cheap because these parts tend to have problems such as squeaking.

Rotor 40206JK600 $120.57
Front Pads D1060JL00B $96.67

Approximately 1 to 1.5 hours per axle (front axle in this case) for a straightforward brake pad replacement without any additional complications.

Front Rotor Replacement:

Typically, replacing the rotors on the front axle along with the brake pads will add around 0.5 to 1 hour of labor time. Check out the images (below). Please let us know if you need anything else to get the problem fixed.