Joe....
IMO, the best place to spot regularly, EH's for sale, at insiders prices (not dealer, not ebay, craigslist) is the facebook page.
https://www.facebook.com/groups/ExcelsiorHendersonRoadClubI believe currently in the past couple of weeks there have been 3 for sale. I cannot quote prices, as some of the posts don't give a price unless messaged to seller.
Next would be craigs list, but at least for me its a hard website to follow.
Ebay is usually dealers, that are asking unreasonable prices, and have been advertising same bikes for over a year. Once in a while a stray private owner will stumble in there.
Almost forgot.... oops.... Mike in Arkansas (ehparts.net), has some for sale also. I'm not in the market, but contact him on his web site via email, or give him a call (phone number is on website). With Mike (I know him personallly), you won't get a more honest sales, as his customer base is small and he knows it. He's good stuff.
As a past owner, I'm hoping you realize that dealerships are unreasonable (unless you have a close relationship with them).
Hope I was of some help. Maybe if Greg gets on here he can add some more. I know he watches the market pretty close.
Bruce