There is a Grumley listed on Craigslist, Detroit Mi, in mint condition listed at $3000. I don't have a clue what they go for but I know lots of you guys will be in the area for the Compton meet this week and it might be worth checking into.
I'm not positive,but I bet it's the same guy that had this Grumley for sale several times over on the stick--- website in the past.Seems his price is a little high for any takers.