I thought it lasted years cos usually the older it is,the more expensive it is.... my favourite brandy is made in cask oak barrels or something..there's 3 ages...the cheaper bottle..a VSOP version and an XO version which is the most expensive...same drink but matured for longer before bottling.
Sure I'd seen something on TV where wines and spirits that were the oldest were like over £100 a drink in some posh club down in the capital!