Question regarding the books

Hello everyone,

I am in the market for books for a gift to someone who has gotten into the movies and still yet to read the books. As I never read them and I'm not very familiar with them can you please assist me in choosing.

I see that there are different artists who did books and I'm not sure if it matters which one to get. I get that all are from J.K. Rowling, but does the artist matters? In my home country I see the most of Mary GrandPre and Jonny Duddle.