Not sure if this helps for your area, but around Kansas City, motor $500-750, trans and transfer case $600-900, front diff $600-800 and rear diff $900-1200.
All depending on mileage, gear ratio, locker or non. I just priced this stuff out for the same reason but missed buying the parts truck. Go to car-part.com and look this stuff up for your area it will give you both ends of the price range that way.