82' kz550 clean air system price

I just did a clean air system delete and its in good working condition. its just a vacuum diaphragm housing.
i was wondering if anyone knew how much i could get for it? its an original kawasaki part, and will be all cleaned up by the time of selling. just wondering if its worth my time to sell to someone who wants to keep a bike OEM.

It's impossible for a buyer to know for certain whether or not a used one is any good, so buying used is kind of risky.
That thing, even with the silencer, hoses & clamps, isn't worth much, but I guess someone might pay $20 for the whole setup. maybe more.