Remember a time - not so long ago - when the standard advice on how to save money on fruit and veg was to buy them loose? And that the best bargains were on the bottom shelf? I've trotted those tips out myself more times than I care to mention but have to tell you now they're out of date.
Pre-packed veg can be cheaper than loose ones. The best bargains can be at eye-level.
Here's an example from Somerfield just now. Loose potatoes, sold down on the bottom shelf are £1.65 a kilo or 75p a lb. (That's not new potatoes which are £2 a kilo) If you buy a pack of four, which I'm guessing would come to about 800g, they're only 90p. Even organic potatoes, sold at eye-level at £1.03 a kilo, are cheaper.
How on earth does this make sense? Well, for what it's worth, my hypothesis is this. Potatoes are a staple - people don't have to be encouraged to buy them. Supermarkets (or rather their suppliers) are taking a hit on the special offers they're doing so they need to make it up somewhere else. They want a minimum spend on lines like potatoes so they want to encourage you to buy a pack rather than the amount you actually need.
None of which is good news for pensioners and other people on a budget who are living on their own but since when have the supermarkets cared about them?
You will almost certainly find potatoes - and other veg - more cheaply if you go to a street market, greengrocer or farm shop but if you're buying them in supermarkets be on your guard!