If XPhone isn't meant for 3rd world / developing countries then it's not expensive, But if XPhone is to be used by the whole world then price has to come down a lot.
Seems iphone 8 sells for $900+ in Rwanda
http://www.yubeyi.com/apple-iphone-8-plus-64gb-gold.html there must be some money there if xphone is selling for 600
EDIT:
Romania a 3rd world country for example average salary is 300 Eur/month, and many girls there have newest iphones.I never ever heard or read anybody say that Romania (or any member of the EU) was a "