Yep, he also spend 2x on international delivery and 20% on VAT (450-150)*0.2=$60: about $700 in total. After refund, he we will get $500 back and be able to sell phone for 1/2 of price: about $250, so $700 is risked for $250 of profit at max.
In USA, will you put $70K at stake with high risk of catch to win $25K at max?
IMHO, postage was opened at custom (because it declared value was over $150) and phone was stolen by a guy, because their low wage forces that way: they can stole 10x of their yearly salary in just one month, until they caught. When they are caught, they will bribe police and leave. New guy will come and will work for next few months, repeat.