I used one for a trip to Sydney in October.  I deliberately became a Spark prepay customer to do that, because the 2 degrees offering was a little weak in comparison.

They are for prepaid and postpaid should be able to buy them through the app as long as you have sufficient credit

@rayonline do you ever Google search? I just searched ' spark roaming packs ' and the very first thing in the search is " Spark roaming packs on pay monthly and Prepaid " and links off to all the information required

VodafoneNZ also offers Prepaid roaming packs as well now

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