As others have pointed out, Usher is Taiwanese, so your friend may not have an opportunity to order it at a good price or even at all.
However, for discussion's sake, I have had items (not just audio) shipped from abroad and realize the difficult choice between warranty and savings. For myself I arrived at two rules:
(1) I would not do it for a model I can afford locally just to save a few dollars. However, I will do it for items unavailable locally OR if shopping overseas allows me to buy a higher model that I simply could not have considered at local prices.
(2) Include adequate insurance in cost calculations. As I'd not have the warranty later, at least insure it against arriving damaged!