Two for £1 up here last time I bought them. I loose them so often I would never pay more than £1 for one.
On the subject of screwdrivers, am I the only one that finds some of the flat terminal screwdrivers are too fat?
I only ever buy cheap, because I break or loose them too often, so that may be why, but it's quite common when I get a new terminal screwdriver to have to apply the grinder gently to make the blade just a little thinner, as some accessories seem to have unreasonably thin slots in the screws.