Craig's List has many ads selling for upwards of 20 times retail depending on the year. You should also consider some of those are fakes.
I called yesterday a Liquor store in Whiteplains NY and they had 2 bottles, one of the 12 years for $995 and the 15 years for $1,599. Talk about over priced. Makes appreciate even more the 12 year bottle I have had for almost 6 years, and funny thing is that one day I just walked into Stew Leonard's to do groceries and went to the liquor store there and saw they had a few bottles and just grabbed one. If I only knew these things were going to be so hard to come by I would've picked up a couple for resale lol