That looks right Hans...I couldn't find these when I looked earlier. Very reasonable at only £24. But I wouldn't recommend Amazon to anybody...awful employer and they use tricks so as not to pay much, if any tax !
Available from Ebay, at the same price, with free p+p ::
I haven't worked there but I know plenty who have, as they have a warehouse ( sorry...a "fulfilment centre" they are American after all ) in Swansea, the size of about 11 football pitches. It is non-unionised and the working conditions are pretty awful. There have been many investigations into Amazon by the papers and on TV. Here are a few examples.
To be honest I thought all this was common knowledge. Of course your experience as a consumer was OK, but they achieve this by the way they work and that they refuse to pay any corporation tax in Britain, beyond a token amount. That is why I no longer use Amazon. I have no wish to support this kind of company.