Brake Actuator - Help finding correct part

Greetings everyone,

My brakes are soft, the alarm is always on and I need to replace my brake actuator in my 2008 Prius.

I know I shouldn't get a used part from the originally issued actuators, since they are all faulty like mine.

I don't want to buy a new part because I can't afford it.

So what I want is a used actuator that was issued to replace the old faulty actuators. As in, someone took their gen 2 prius in during the extended warranty period, and got their actuator replaced. That's the one I want, the replacement actuator, but not new - used.

Is there a way to tell when a brake actuator was manufactured? That way I can get a non-faulty one?

Thanks for taking the time to read this!

-Bjorn Parramoure, Palatka Florida