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File photo / NZ Herald. The cost of postage is set to rise in July, New Zealand Post says. The standard letter rate, which is the cost of sending a medium-sized letter by standard post in New Zealand, is set to increase from 70 cents to 80 cents.Sending larger letters would also cost more, increasing from $1.40 to $1.60.epending on the size of the parcel and whether it was self-wrapped or in a New Zealand Post postage bag, people would be paying between 10 cents and $1 more. Meanwhile, premium letter services, which is Fast Post and Box Link, would not change in cost, New Zealand Post said.
As of June 2014, the United States Postal Service states that the cost to send a standard sized postcard is 34 cents. At this rate, the postcard can be 6 inches long, 4 1/4 inches high and 0.16 inches thick. The USPS also includes that a large postcard is 49 cents to mail. The maximum size for this postcard is 11 1/2 inches long, 6 1/8 inches high and 1/4 inch thick. This is the same rate to mail a First Class 1 ounce letter domestically.The rates for postage increased as of January 2014.