Green Tea Ice Cream?

So does anyone know where to purchase green tea ice in a 4 L, or larger, size -- either in Saskatoon or ships to Saskatoon?

Wife loves it & has gotten the whole family into it but it is hard to find. We periodically eat at New Island Sushi (where she discovered the ice cream) & they advised they order it out of Calgary. Locally, we have only found a small pint size container at Coop (not nearly as good & too expensive for the size). Haven't been able to discover the Calgary distributor but still trying to find.

Any help appreciated...