Originally Posted by Lemurion
Airport and station bookstores are very small. They usually carry a fraction of the number of books at a regular store. Standardizing on one line of travel books makes sense. They may or may not have made the right choice as to which line to carry, but standardizing on one makes sense.
and people would be more likely to buy something when they see 30 "for Dummies" books on the wall, they see, hey, that's a good series look how many there are. it makes it a trused name even if they never heard of it.