Is $11,000 to replace multiple components of an AC unit a fair price?

This quote is for the replacement of multiple components within the AC unit due to various issues identified during a service call. The technician noted significant corrosion on the coils, black marks on the circuit board indicating overheating, and buildup on the blower motor. Additionally, the capacitor was found to be reading 38 when it should be 45. - Coils: Replacement due to significant corrosion. - Circuit Board: Replacement due to black marks indicating overheating. - Blower Motor: Replacement due to buildup. - Capacitor: Replacement as it reads 38 when it should read 45.