I think you will find that Paul's question was where was the best place in the UK to purchase levs so we answered? What's wrong with that?
Don't really see the relevance to the cheap fuel comment, if you've got two travel agents next door to each other on the high street then surely you go to the one with the best rate, nobody mentioned driving from Lands End to John O'Groats to get an extra few Levs did they?