So one of my front wheel bearings is starting to make noise and I want to replace it. My only problem is I don't know which one. How expensive are the bearings if I were to just replace both. The only thing I notice is when I turn right the noise stops however straight and left turns the noise is there.

 

i believe that should mean the drivers side bearing is bad....but i cant remember...
jack up the front of the car and spin the wheels...if the bearing is bad enough, you should be able to hear it when the wheel is turned....
i wouldnt replace both unless you absolutely have to

 

If the bearing is that bad

you can just get a firm grab of the tire and wiggle it - if it moves - that is your bad bearing