And the relative values of the Pound and Dollar. The distilleries and shops along the Whisky Trail sell at retail with taxes included. The result can be sticker shock for US visitors. Importers buy at a discount in large quantity and this negates the effect of the inflated Pound and weak Dollar.
Oh, and the Japanese (and American & Canadian) versions of “Whisky” are required by international trademark agreement to be spelled “Whiskey”. Even if the method of distilling and aging (in used American fired oak Bourbon barrels) is the same and they’re informally calling it Scotch.