NEW YORK (AP) — Amazon’s new “unlimited” e-book service lets you read 600,000 books. That sounds like more than you’ll ever read, but I found myself struggling to find the books I wanted.

It turns out that the library of 600,000 is bit like a small bookstore with a few current titles such as “The Hunger Games,” attached to a block-sized bargain bin of obscure stuff mixed with “Robinson Crusoe” and other classics that are in the public domain and available for free online anyway.