The offer here states it is an app only promo but still works on the website when code APPEXCLUSIVE is used at checkout.
Thanks Chchpeep for pointing this out
NZ Flat Rate shipping only.
Excludes Bulky & Rural delivery.
Applicable to in stock items only
Excludes all Marketplace items
Not valid in conjunction with any other offer or prootion
1 x Use only
Offer expires 11:59pm, Sunday 12 June