If you are traveling to the centre of the North Island, fill up at Turangi, Taupo, or Waiouru where the price of 91 is $1.08.9. Price at National Park is $1.11.9 and Ohakune it is up to $1.14.9 Diesel is up as well by the same margin, there is no competition in these two towns.
bloody petrol heads, why don,t you just sniff glue, its more refined and you can get it from your local dairy (why would you want to travel halfway up the island for an inferior product)