WTB: Carrera Blower Relay 91161815300 (Used)

Hello,
I have feelers out to many 'used' sources---but thought I would try here.
Looking to buy a used/working Blower Relay (91161815300)--- for 80s Carreras w/ auto-heat. [location is left of engine bay above the 3-pole fuse]

*I don't drive my car in the winter, so not a critical part---thus trying to save as much $ as possible.

Or does anyone know of someone who repairs non-working relays? I assume this is a pretty complicated/disposable part from the look of it.
Attachment 352575
Regards,
Keith
84 Targa