Does anyone 'shop around' for the cheapest petrol? (Daily Echo: Shop around for the best petrol price, June 17).

In some instances, by the time we have driven there, we have spent what we thought we had saved.

That's almost as daft as one of our local supermarkets, offering 5p a litre off if the customer spent over £30. But you had to drive from Upton to Westbourne to benefit, as that was the closest petrol station validating the offer.

Sometimes, so-called common appears to be dumb logic.

Alan Burridge, Bandford Road, Upton