Looking for an estimate on a rare front end setup I have. Its a '96 Manitou EFC fork with the AC dual crown conversion and speed springs. Fork is functional although could probably use a re-lube. Included is a disc brake conversion mount, with a complete Formula system attached (pads move when the lever is squeezed, so seems like the bleed is still decent). I also have a US-made Control Tech stem, Azonic riser bar, and period-correct Sram Grip shifter in clear plastic that still bangs through all its clicks. Im in the States, and a local collector has offered $600 USD. I can't find any examples of the AC kit for sale, so I don't know if that's a fair offer. For context, I own/operate a MTB shop, and I like having old forks around for nostalgia/conversation so it is valuable to me. I don't really need the money, although it could go toward some new kit which I would actually ride, so I'm seriously thinking about selling it. Do I counter offer at $800? $1000? Is this a unicorn, the last of its kind? Any insight is appreciated.