Some STT cards are rarer than others. Most of the STT cards made available via the web tend to be relatively common, although some earlier ones from popular pack titles, such as the Nazgûl (from the Lord of the Rings series) can attract relatively high prices. Cards made available in other promotional ways can be exceptionally rare. An example is the "Grandmamma" STT card for the Roald Dahl pack. It was given out, free, to Scouts at a charity sleepover event in 2004. Very few of these are in circulation and they are difficult to obtain even through online auctions.