Don't know which color you need, but it's $42.89 shipped from onlinemazdaparts.com. Double check with Jason (Mazdapart@gmail.com) that runs the Web site on the part number/part, but I believe the link below is what you want:
I had to replace the driver's side one in my wife's '02 Protege Sedan last September. Was looking for used first, but was swayed to purchase new since I didn't want to take a chance with a used one and her safety.
Don't get this part from the junkyard. Not worth the few bucks savings. Plus, it seems to be a common failure on the car, so a junkyard one could only last a few weeks before you are in the same boat again.