PC Keg of Aged Hunter's Ale

What is the current selling price of kegs of aged hunter's ale? The prices change like the price of black dye so I never know what the current rate is. I've been told everything from 12k to 45k. So anyone have the skinny on this?

I usually see people offering 12-15K for them - when people are even buying that is.

K thank you. They should really have like an open page on this in wiki to update prices on a consistent timeline.