They're the sort who only have official merch from gigs they've personally attended.
I used to work around a lot of celebs as part of a side job, and had the chance to get autographs from some band or other once, but that was refused unless they could be there in person to savour the sweat-aroma of Steelcore-Thunderdeath-whoeverthefeckitwas.
I might just go with some Steam games instead!!