Yes, it's expensive.
Brembo (they're on Porcshe, Ferarri ect) Wildwood, Alcon, Stoptech, Movit, Baer are all aftermarket highend brake companies. Doug Rippie, Lingenfelter, Mallet and all the other corvette tuners use their parts in kits. To upgrade calipers and rotors (not just drilled but...