So this is a difference between "available" an "in season".
I was relying on https://www.produce.co.nz/seasonality-chart/ which says Envy apples are available until November.
But https://www.goldenbayfruit.com/our-fruit/our-varieties/envy/ says available April to August,
But drilling down https://www.goldenbayfruit.com/wp-content/uploads/2022/10/Golden-Bay-Fruit-Seasonality-Calendar.pdf says harvesting is only April. So any other month means the product has been in storage.
It may grow elsewhere in NZ at other times but I can't find any online sources.
I shall update my PSA notices to April only for Envy apples.