Google Books often sells the digital eBook version of this title. Search for "Gramática de uso del español A1-A2 Ediciones SM" in the Google Play Books store. You can usually read a 20-page preview for free.
Master Spanish Basics: The Ultimate Guide to the Gramática de uso del español A1-A2 PDF gramatica de uso del espa%C3%B1ol a1 a2 pdf