1/A Kentucky bourbon and a Japanese blend, both sitting at the bottom of their own price range this week. Angels Envy is $96. Nikka From The Barrel, $77. Plain shelf tickets at Dan Murphy's, neither one a members' deal.

2/Put the two in one basket and the pair is $173. Across the eleven Thursdays I've tracked them together, that is the lowest the combination has sat; it usually runs nearer $181. Both bottles are near their own floor at the same time, which is what pulled the basket down.

3/A caveat on calling it a pair. The profile model reads them only loosely alike, a cosine of 0.58, and the value model rates them nowhere near each other. So this is two keen tickets that happen to coincide, not two versions of one whisky.

4/Sizes are not matched either. The Angels Envy is a 750, the Nikka a 500. The $173 is a straight sum of the two live tickets, not a discount anyone is putting on the shelf. Read each bottle on its own before the basket maths.