Just been into Asda and both Aberlour and Glenfiddich 70cl bottles are down to £15.
Not checked if this is online yet but it was nationwide last time they dropped it to this price.
Not wanting to start a whisky war but Aberlour is one of the best speyside malts out there on the mass market.
Enjoy (responsibly!)! - that means don't add anything but a splash of water!