The other day I needed to replenish our stock of Jameson Irish Whiskey (750ml) and whilst it's true that many prices have increased since devaluation and also that prices vary quite wildly depending on where you go, many brands are still considerably cheaper than in the UK. This is of course based on an exchange rate of US$1/AR$36.
In Coto, Carrefour and Discso, Jameson is priced between $850 and $1200, but in the local Chinese I picked one up for $600, which is quite bizarre. At GB£1/AR$48, that's £12.50 and the cheapest I could find it was at Tesco at £22.50.
Same with Capt Morgan Spiced Gold Rum which you can pick up here for about AR$220 (£4.60) whereas in the UK it's about £14.50.
I'm sure that there are similar situations with Gin and Scotch, so It's a pleasant surprise to find that we actually win sometimes. Of course it's also true that booze is very highly taxed in the UK and frankly I didn't find the Heathrow duty-free prices to be all that remarkable, so we didn't buy any.
Variety is certainly improving, but imported beer is still rather expensive though.