2002 Toyota Corolla bearing

The car makes a winding sound when I steer toward the right, especially at higher speeds. I noticed it a year ago when it started out, at first, faint and hardly noticeable. Recently it's more pronounced. What other part costs might I be looking at if the bearings have to be replaced? What is the normal repair price for something like this? Any common ploys I should watch out for when trying to get this worked on?

thks

Steve