Lumia 640 has $50 off at the warehouse
http://www.thewarehouse.co.nz/red/catalog/product/Spark-Microsoft-Lumia-640-Black?SKU=1982314
http://www.thewarehouse.co.nz/red/catalog/product/Vodafone-Microsoft-Lumia-640?SKU=1986457
Great price for a 4g phone that also has an sd card slot