Just thought I'd share this:
Vic Deals (a large Facebook group I'm subscribed to) currently have a deal with BigPipe giving $10 off per month for 12mo on a no-contract broadband plan. Looks like this deal is for anyone. Furthermore using a referral link will give you a further $20 credit. This makes 100/20Mbit UFB, for example, $69/mo with the ability to add a static IP also.
So if you dislike your ISP I encourage you to give them a go - they're great!
More information here: https://www.bigpipe.co.nz/vicdeals
And, if you want $20 credit you can use my referral here. Just enter the promo code "VICDEALS" when signing up.