Aberlour's 12 is the only one priced near its crowd

The reflex in a bottle shop is to treat a climb in price as a climb in value, each step a little more whisky for a little more money. Measure each Aberlour against its crowd, though, the ten drams the model rates nearest it on flavour, and the pattern inverts. The entry bottle comes in level with its neighbours while the two above it pull well clear. Three bottles, and the brand's middle price this week is $140, a Speyside house trading firmly in three figures.

Aberlour sits in the heart of Speyside, at Charlestown of Aberlour on the river Spey, and it has built its name on sherry. Oloroso casks from Spain run through the whole range, and that is the thread tying these three together: the orchard-and-dried-fruit sweetness, the spiced warmth, the depth that sherry wood lends a malt. Keep that in mind as the prices climb, because what the extra money buys is more of the same influence, older and stronger, rather than a different whisky.

The Double Cask 12 is the honest one. At $113 against a crowd sitting near $112, it is priced within a dollar of its flavour-neighbours, which on this shelf counts as a rarity. It is the Aberlour most people meet first, matured in both bourbon and oloroso sherry wood, and it drinks the part: sweet orchard fruit, apple and banana, a twist of orange peel, a toasted, heathery note underneath. For a sherried Speyside malt with real sherry character and a fair tag, this is the one that asks nothing extra for the name on the label.

The 14 Year Old is where the premium starts. It is $160 against a crowd near $117, about 37% over, and it is the richest-nosed of the three: jammy and marzipan-sweet, toffee and orange and a honeyed, cakey depth. Those two extra years and the deeper sherry influence are a genuine step up in the glass. They are also a step the model reckons its flavour-peers do not charge for, so you are paying a third again over the going rate for the profile. Good whisky, priced with confidence.

Then there is the A'Bunadh, which is the one the arithmetic can't ignore. At $155 against a crowd near $67, it is asking more than double what its nearest flavour-matches ask. There is a reason, and it is not a trick of the model. A'Bunadh is a cask-strength, no-age-statement oloroso bomb, bottled in batches in the high fifties for alcohol, and it tastes like it: thick oloroso, dark berry, caramel and cinnamon and orange, the whole thing dialled up. Its crowd sits low because the whiskies nearest it on profile are ordinary-strength sherried malts at ordinary-strength prices. Cask strength is a different product and a costlier one, and the gap is the price of that difference rather than a verdict on the liquid. It is the most intense dram Aberlour makes, and it charges accordingly.

It helps to picture the three as one house style told at three volumes. The Double Cask is the everyday pour, sherry held in balance with soft orchard fruit, the bottle you keep open and reach for without ceremony. The 14 turns the dial up: more age, more jam and marzipan, more weight through the middle, and it asks a third again over its crowd for the privilege. The A'Bunadh is that same character with the lights blazing, undiluted and bottled batch by batch at cask strength, a dram for a cold night and a single considered glass rather than a casual top-up.

Seen that way, the premiums stop looking like a puzzle. You are not paying more for a better version of one whisky. You are paying more for a bigger, older, stronger take on a single sherried idea, and whether that is worth the money comes down to how much of that idea you want in the glass at once.

So the structure of the range is the opposite of the ladder it looks like. The value is at the bottom, the premium gathers as you climb, and the climb buys age, sherry weight and strength rather than a better deal. None of that makes the dearer bottles bad buys. It makes them considered ones.

Here is how to spend across the three. If you want Aberlour's sherried Speyside character at fair money, the Double Cask 12 at $113 is the clear pick and the only bottle on this shelf priced in step with its crowd. If you already know you love that style and want more of it, the 14 at $160 delivers the deeper, jammier version, at about a third over the going rate for its profile. And if what you are after is the full cask-strength oloroso experience, the A'Bunadh is the bottle built for it, so long as you go in knowing the premium is the price of strength and scarcity, not a markup you can argue down. For a first Aberlour, start at the bottom. The view up the range is the unusual part, and now you know which way it runs.