Anyway, I took the leaflet into work and during my tea break I went to company's web page to place an order. At the last moment, I thought to check whether Amazon had them too and see how the prices compared. Well, Amazon did have them and at a pound or so cheaper. So I ordered from them instead. :) Probably not at all what the original company intended.
They arrived this morning, so I will have new things to watch during the long dark winter afternoons.