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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.
During 2012, the stamp for a post card went from the 2011 fee of $0.29, up an amount three pennies to total 32 cents. To send a postcard to an international destination the rate is $1.20, up from $1.15 as of the May `015 date. As of Jan `014 large postcards rose 3 cents to $0.49, up from $0.46 to mail. These have maximum dimensions of 11 1/2 x 6 1/8 and can measure up to 1/4 thick. Postcards are a great way to save over the price of first class letters.