Selling a 2015 with less than 90k in Seattle area (soon-ish) questions...

I have a 2015 Gen1 with less the 90k on it, no body damage, no operational issues, and in the next two months (approximately?) I'll either be replacing it with a Rivian R2, or the Subaru Trailseeker.

It seems like selling it into the local Volt community would be the best idea. Someone who knows the Volt, appreciates it, and understands where it is in its lifespan. But I'm not sure how to find that person. Do we have local groups of Volt owners that I don't know about?

I'm also not sure about what to ask for it. Prices differ wildly and seem untethered from KBB valuation, or other "trusted" valuation sources. Some places say it's an $1800 car, and then I see others selling for $5k.

Any thoughts on selling a Volt, especially in the Seattle area? I'm all ears.