The bookstores I go to (the ones that haven't folded) there is at least one full shelf and maybe a half shelf of Star Trek and no less than 4 shelves devoted to Star Wars. The reason Star Wars is going stronger right now is the franchise has had some recent movies (with debatable quality) a cartoon on TV and a toyline that hasn't stopped since the mid-90's. All Trek has had is a couple of obscure TV shows on a network (UPN) that nobody got and no toys in stores. I don't think the quality of the books has anything to do with it since there is a lot of goofy stuff in some of those Star Wars books like the story where IG-88 uploaded his brain into the Death Star before it exploded.
