Fist of all, I completely agree with you that this should not be the only and permanent solution. I view this as a temporary backup measure just so a GPS can be used in a time of emergency. Electrical tape should at least be used to cover the exposed wires etc.
Second, this is not an issue of unhelpful dealership, I've called three Subaru dealerships, the part is $150, it's the way it was made - it's what it costs, they have to order it.
I understand I cannot do anything other than have the original part, which I cannot get for less than $150.
Having said that, what about the amp kit and directly connecting the battery to a new cig lighter? My only question was, can I connect the wire from the kit to the old cig fuse or not?