Are you doing yourself -- or having the shop doing them?
If you are doing yourself, I picked up a power stop front and back brake pack from Rockauto a couple of years ago and could not be happier about the performance. If your calipers are not hung up not sure why you would need to replace? Just inspect, grease up the sliders and only replace if the piston boot is torn.
You will likely need rear drum parking brake shoes. They are likely toast.
If you are paying for them, yes mechanics want to replace nearly everything. Its not just about profit, if they do not for example replace a caliper then a problem develops, customers are mad, so it is easier to swap it all out -- and its expensive.
Brakes are easy DIY but it helps to have someone who knows what they are doing help you the first time.