Ceramic rotors usually cost about $2,000 a piece. Also a standard caliper cannot handle the heat generated by the ceramic rotors (specifically the seals), therefore you would need custom calipers as well. I know this because I was asking Stop Tech and Brembo about it for my ACR Viper. I was hoping I could just swap out rotors and pads but it turns out it's not that simple. A typical ceramic brake kit runs between $15,000 and $20,000.