My business is importing and unfortunately for me the above is not quite how it works. Cost-plus accounting is an old and broken system - you can’t just jerk your prices around as costs change especially not due to currency fluctuations. If I did that my sell prices and hence retail shops prices would be fluctuating on a weekly basis. Consumers will not accept that in most industries.
Anyway, while I am not up with specifics one AU/US cross I can say the NZD has come off about 12% vs USD. Let’s be hyper generous and call that 20%. That would still make it a $240 box not touching 500.
Now, if the USD prices above are representative of the world market and limited supply due to the end of production has led to gouging, then fair enough.
Price is still ridiculous though given the odds are against you getting a card worth what $20 from the box?