German Amazon link:
https://www.amazon.de/Complete-Art-Guild-Wars/dp/1506715990/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=art+of+guild+wars&qid=1566904605&s=gateway&sr=8-1

Amazon.com:
https://www.amazon.com/Complete-Art-Guild-Wars/dp/1506715990/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=art+of+guild+wars&qid=1566904631&s=gateway&sr=8-3

Amazon.co.uk (strangely hardcover is unavailable):
https://www.amazon.co.uk/dp/1506715990/ref=sr_1_2?keywords=art+of+guild+wars&qid=1566904657&s=gateway&sr=8-2

For those who don't know, this book comes in a physical hardcover release as well. It already has a page on amazon, tho the pre-purchase is not available yet: https://www.amazon.co.uk/dp/1506715990/ref=sr_1_3?crid=2APWROYZYJ96J&keywords=guild+wars+art+book&qid=1566909698&s=gateway&sprefix=guild+wars+a%2Caps%2C154&sr=8-3

Don't worry, it's on Amazon as well. At least on the German one, I've been able to find it quite easily.

German Amazon book

Ty. Cleaned the link, see below. Btw if Amazon sells the same item in different countries, it often has the same reference. So no need to search on amazon sites on by one to find it for your country (or to find that it's a lot cheaper to order something abroad) : you can simply replace the domain.

https://www.amazon.com//dp/1506715990/

https://www.amazon.fr//dp/1506715990/

https://www.amazon.de//dp/1506715990/

https://www.amazon.es//dp/1506715990/

https://www.amazon.co.uk//dp/1506715990/

https://www.amazon.it//dp/1506715990/

Only the GB and IT ones are unavailable atm.

https://www.amazon.com/Complete-Art-Guild-Wars/dp/1506715990/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=art+of+guild+wars&qid=1566904631&s=gateway&sr=8-3

https://www.amazon.com/Complete-Art-Guild-Wars/dp/1506715990/ref=sr_1_1?keywords=the+complete+art+of+guild+wars&qid=1567273458&s=gateway&sr=8-1

The Art of Guild Wars 2 https://www.amazon.com/Art-Guild-Wars-2/dp/0578026988

The Complete Art of Guild Wars https://www.amazon.com/Complete-Art-Guild-Wars/dp/1506715990/ref=pd_lpo_sbs_14_img_0?_encoding=UTF8&psc=1&refRID=E0P0VA3P12Z4MNAWTMRR