Oloroso Butt

We assume 500 litres at purchase at age 2, 28 years of maturation, annual volume evaporation of 2,5% and 50% cask strength at age 30. After dilution to 40% and bottling in 0,7-litre bottles, this gives approximately 246,09 litres in the cask and 439 full bottles, before bottling losses. The stated cask size is an assumption for the contents; actual volume and strength must be measured.

N = rounded down [L × 0,975²⁸ × 0,50 / (0,40 × 0,7)].

For Oloroso Butt, the table shows our indicative recommended bottle prices and corresponding cask values at age 30. In the column before VAT, excise and packaging, we divide the recommended price by 1,21, then deduct €5,12 excise and €25 excluding VAT for the bottle, label, cork, tube and bottling.

V(a) = purchase price × (1 + r)^{a − 2}, where a is the age from 2 to 30 and r is the selected annual growth rate for the scenario. We apply this rate each year to the accumulated cask value.

• Low: 4,95% per year.
• Middle: 6,22% per year.
• High: 7,38% per year.

Price survey dated 27 September 2026. The expanded comparison contains 58 observations from eight retailers, with one special order at K&L kept separate. These are retail asking prices, not completed sales or sales-weighted market averages.

The original price comparison: low €514,95 is the median of the five cheapest of the original ten DrankDozijn prices. Middle €706,90 is the median of thirteen euro prices from DrankDozijn and Urban Drinks. High €944,065 is the unrounded average of the original ten DrankDozijn prices. Macallan was excluded from this selection. Low and high have deliberately been retained from the earlier selection; these three references are not three statistical boundaries from a single combined dataset. Our own indicative recommended prices for each cask appear in the product table above.

British and American prices are shown below as an additional comparison. We do not add euros, pounds and dollars together. The spreadsheet converts bottle prices to 700 ml, but does not adjust for currency, local taxes, brand premium or alcohol strength. The same bottling may appear at several retailers. Stock has not been confirmed individually for every bottle.

Download Excel: scenarios and all sources

The download includes scenario outcomes for all seven cask types, full-bottle counts, our own indicative recommended prices, cask values, annual values from age 2 to 30 and all 58 price observations with source links.