Well, my reply "whats good money" was not a joke, I was wondering what they were worth. I did not know they didn't make them anymore. He sounded desperate to get one.
I just removed a Garmin 320 GTX transponder with the KT76 adapter. I just removed it for ADS-B Appareo Stratus ESG install.
I was going to sell both on eBay as someone might want to replace a broken King 76 xpdr....it simply slides in to existing tray, no wiring or anything.