Standard fibre installations are currently free! This applies to the vast majority of installations in New Zealand, so it's very likely you won't have to pay a cent to get fibre installed at your place.
Fibre installations might not be free forever, so we recommend getting on board as soon as possible.
In the extremely rare event there is a cost associated with your install (for example if you have an exceptionally long driveway), your fibre installer will discuss this with you and you'll need to agree before any work can go ahead.