Logos has just updated a number of resources. Included the Anchor Bible Dictionary,
Thanks Logos. This was done free of charge. The updated resources are now hyper-linked to the documents quoted in them. Logos published the resources after the dictionary was published, and therefore under no obligation to link them free of charge. Imagine how many hours it took. We get the updated book at no additional cost. How many companies would have done that?
That is why their resources cost more than an ebook which can only be searched.