R1 Concepts is currently selling their E-Line rotors for $342 shipped and their Premier rotors for $500 shipped for a 2009-13 CTS-V. That's all four rotors, so a great value for anyone looking to do this upgrade.
2010 Camaro 2SS LS3
Pfadt lowering springs, trailing arms, and tie rods;
1LE/ZL1 black 10 spoke wheels w/ Goodyear tires;
Currently for sale