On a car that is 3-years old, that has damage to the bumper, which would cost around £150 to fix, would I be better to look at buying a second-hand bumper in the same colour??

It is a pearl-black metallic (laquered?).

With repainting I am concerned with the paint not matching fully, and am wondering if the chances of it looking 100% are better by fitting a bumper from a different car if the costs were roughly the same?