The vast majority of people who have bought AC/DC Pro's have kept them.
I have heard of one person selling due to funding a trip to the USA with the one he won, another selling to upgrade to a Premium, and another upgrading to buy a mates Black in Black LE that became avail.
Other than that, out of the 150 Pro's sold in Aust, only apx 3 have been put up for sale. Not bad. Resale will still stay IMO high because no one knows how many more Stern are building, and most people have expressed they will keep theirs forever. They will probably stay $4750 and above for low home usage models, maybe a bit less for sited ones in great condition. Time will tell.....