Last Saturday's Guardian Money headlined the advantages of the booze cruise and the bargains to be had.
One of its examples was a Chilean Sauvignon Blanc, £6.50 in M and S and £1.30 in Pidou, Calais. What a bargain.
Hang on a second. Or, for ever.
If a bottle of wine can be sold for £1.30 and merchant, distributor, bottler and vineyard all make some money - what is the value of the contents? No more than 30p I'd warrant and that is generous of me.
Now I like a good Sauvignon Blanc but I like to taste something more than the chill. And despite my lack of ability in the tasting department I like to know that the contents are not doing me harm. At 30p a bottle I am not wholly convinced.