Not sure which ones you are talking about here. If you are talking about the front bearings. Do you mean for one or both sides. Also remember this on alot of vechicals. Some are what are called pressed on and others are not pressed on. The ones that are not pressed on are alot cheaper to replace and if you and a friend are a back yard mechanics. Both of you should be able to do the job.
What bearings? Wheel bearings are cheap and a DIY job. Engine/transmission bearings? They are more expensive and the labor to change them will run into the hundreds. Axle or steering bearings fairly cheap and yet another simple DIY job.