"`Sherlock' and Transmedia Fandom: Essays on the BBC Series" edited by Louisa Ellen Stein and Kristina Busse isn't exactly a snip at $40.00, but there's lots of interest here. The contributors, mostly but not all female, compare the characters and milieu of "Sherlock" with those created by Conan Doyle, and examine the relationship between what you might call the Holmesian or Sherlockian establishment and the suddenly very significant devotees who happily call themselves fans - a term that doesn't spring naturally to the lips of many older admirers of the great detective. (It's firmly established among science fiction enthusiasts, though, and there's a long history of shared interest there.) Other essays cover Sherlock's place in the tradition of television adaptations, international interpretation of the series, and a good deal more.