Saw this in today's paper and it's not a bad deal.
Normally $18 for 1L and $55 for 5L. Stihl.
Bunnings has 1L Castrol for $12.
Mitre10 has 1L from $17.88.
I don't know enough about 2 stroke fuel to know the difference between Motomix and other brands.
I think this is a national deal. The Post has Porirua, Upper Hutt and Petone listed on the ad. Can only see a mention on Porirua's FB page. Best to maybe call up to see if they are running this promo at your local.
Looks like it might be premixed fuel…but I'm not sure who would pay the normal price of $18 / litre for the small container? So I'm slightly confused