Desperate, he opened his laptop and typed the magic words into the search bar.

“Das komplette Übungsbuch ist im Buchhandel oder direkt beim Verlag erhältlich. ISBN 978-3-941323-45-7”

It was a gray Tuesday afternoon when Lukas, a B2 German student, stumbled upon the phrase that would change his evening:

Lukas sighed. Then he smiled. He closed the PDF, opened the publisher’s website, and bought the full e-book for €19.90.