What is the airmail postage on postcards to Beijing?

寄到北京的航空风景明信片的邮资是多少?

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What is the airmail postage on postcards to Singapore?

寄到新加坡的明信片航空邮费是多少?

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With Registered Airmail postage costs start from US $ 5 - no insurance.

问题不够准确,补充下,是指5美金不含保险的费用.

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