I just got them in , I have to check them to make sure they were built right ( my machine has been known to screw things up from time to time ) 
But IF they are good they will be $15 as a spare to replace your existing cap ( new units only , above #40 orders )
OR can be ordered as a 510

But IF they are good they will be $15 as a spare to replace your existing cap ( new units only , above #40 orders )
OR can be ordered as a 510

All switches fail sooner or later. Is this one that can not be fixed at home when that happens???