I found out that if you are part of any of these organisations you already get access to deals:
Bidfood
Foodstuffs
Steel & Tube
Mitre 10
Tower Insurance
Master Painters
RSA
REINZ
CANZ
ECC
Bookkeepers Institute
Master Joiners
NZ Deerstalkers
Ask the HR manager / membership manager. They all have benefits app with the CSC/N3 discounts.
also motor caravan assocation gets a bunch.
… without spoilng it for everyone, csc discount is very easy to get