brakes bearings wheels

Hi, The front weel bearing is getting noisy on my 1999 E46 323i can anyone suggest a good place to purchase a front wheel bearing from in Melbourne and the price I should expect to pay? Also when I had the front wheels off I noticed one of the front calipers was sticking a bit and the piston...

Alright, so I've had the common problems on my '02 325CI since I got it, but now, there is something new happening, and I don't know if I need brakes, or if there is more to the issue. Whenever I brake, and typically only under 15 MPH, the brakes sound as if they are rubbing against something...