Perhaps some gentle advice was provided by the carriers back to Bitmain to put a more accurate value on the consignments.

In Little ol' NZ, if you have a consignment worth over NZ$1000, you need to sign up as an importer so you can cough up the Duties, fees and taxes.  Also, by registering, you can pay the Duty etc before the consignment arrives, speeding things along their way.

My first pair of S1's I ordered in February came thorugh as US$49.95 each, no need to regsiter (GST only payable on goods+ Shipping over NZ$370)

My March shipment on 500 x Antminer U2's caused me to have to register.

The pair I'm waiting for delivery tomorrow came through as US$200 each.  Since I forgot to add my NZ Customs client code, the delivery that should have happened on Thursday is delayed by 6 days (4 business days),  oops.  Then again, I had to prove that I'd paid (0.804BTC / US$374 at the time), less than the declared total value (US$510) on the consignment.  And if you end up paying GST, it pays to have a decent consigment to make it worthwhile as you get charged NZ$100 just for the need to handle the paperwork...