i could do new pads and rotors on the whole car for right around $100 and thats with the "mid" level parts (wagner thermoquiet pads, cheap rotors). in fact...i have done it
good stopping power, low dust, low noise. people need to replace their fluid and bleed the system well...that's how you get "good" brakes imo.
getting new (or turned rotors...for whatever reason) just makes sense since youre starting with new stuff all around. what if the new pads wear unevenly? they will, since the rotor is already grooved from use. anywhere the pads don't sit parallel to the rotor is a reduction in efficiency.
and taking the brakes apart to deglaze the pads and rotors...who wants to mess around with that? ive taken mine apart enough, and i have to yet again. i had to deglaze one front corner since it was making a "scraping" sound when the pedal was down, and then i put new stuff in the front and they've been fine for the last 2 years.
the rear drivers side has developed a "chhh chhhh" sound that comes and goes. the rears are 3 years old without having been touched since install.
time vs money...this is one of those times when i'll spend a little more not to dick around later...plus it would be like changing a timing belt and not doing the water pump/tensioner. do everything you can while your stuff's apart...