I'm doing a bit of research prior to creating the listing. I found this god-awful website with some good information:
Selling Motorcycle on eBay Guide
How to sell your motorcycle on eBay - Guide.
http://usedmotorcycles-forsale.com/...
Following their advice, I checked "completed sales" of 1992 FXRS Low Riders on Ebay.
There are 8 listings of bikes like the chicken. Two are clear duplicates. It looks like one may have sold at $5900.
Another highly customized one seems to have gone for $13,000.
Others that did not meet reserves seem to top out with bids around $5k.
I suspect the bike may not be worth what I had initially thought. I'd been told by a few that it should go for around $6500 but given this new info that seems optimistic.