"Imp... I hear that getting the bearing pulled off can be a brutal chore sometimes. If I knew it would come off fairly easily, i'd do it myself. But if I get it all tore apart and can't get it off, I'm hosed. A local mechanic said that If I brought him the hub, he'd install it for $100. That sounded fairly decent to me. I know the guy, so he might be cutting me a break. THen again, I have no clue how many hours he'd have in it."
Fronts are relatively easy, since the whole wheel hub containing the bearings is removable as a unit by removing the big nut from the axle shaft, then 3 screws which retain the hub to the steering knuckle. I bought mine on E-bay for $51.00 each, brand new, whole hub comes with bearings already pressed-in, even has new wheel lugs in I, and comes with a new ABS sensor attached. Made in China, though, frowned upon by some. I have had no trouble with them at all, about 50K miles now.
Rears are another story. Since the "knuckle" back there doesn't "steer", the bearings are pressed right into the knuckle. Unless you have had experience using a hydraulic press, and a bunch of bushings of various sizes to use for pressing the bearings without damaging them, the job would be near impossible using big hammers. Some will say I'm wrong. Those will be the "hammer-mechanics". Rears are a *****, do-able, not easy.
A hundred bucks is well worth it, if the guy knows what he's doing. imp