This page is created from this thread, this is not a complete list but hopefully will be helpful to someone. Please edit this and add all extra stores you know about.

North Island


Store Location Description Comment
Fox Outlet Centre3 Akoranga Drive, Northcotebut there is also Fox Outlet (It appears to be dying so not sure if its still good)1
Pagani81A Portage Road, New Lynn AucklandFor girls dresses Pagani outlet was amazing.1
Hellers Factory Shop10 Ha Crescent, Wiri, Manukau1
Why Knot?79 Springs Road, East Tamaki, Manukau, Auckland(they have end of line stock for a number of companies. They also get all the NZ natural seconds)1
Sock Makers5B Hunters Park Drive, Three Kingsthere's a factory shop on Mt Eden Road, most socks are $10. They have the contracts to make all sorts of school socks from all over the country, lots of soccer teams, make promo merino socks for sports events etc.1
CS & CO25 Richard Pearse Drive, Airport OaksIf you're after perfume, natio products, makeup, OPI, makeup etc, there's CS company in Airport Oaks.1
Dad's Pies Café57 Forge Rd, Silverdale (Orewa)They sell factory second pies at $15 for a carton of 10 gourmet or 12 standard pies. They get fresh stock every Wednesday and Friday. Ask the staff you're looking for some seconds.
Much Moore Outlet Shop87 Springs Road, East Tamaki, AucklandVery cheap ice cream from the Much Moore brands.1

South Island


Store Location Description Comment
Hellers Factory Shop67 Main North Road, Kaiapoi. 1