Well ... the way NZ is setup, you can basically renew right before it drops.
I would wager (I have zero proof on this) that they do this to see the valuation of the domain. It is a free way of getting a "solid offer" without having to ever say yes or no.
I'd never do something like that as I...
Another one is https://www.discountdomains.co.nz/ - decent, but in general Expired.co.nz ruled the roost. A fourth one is http://domainrecover.co.uk/ but they are old school Snapnames style - fixed price, once you have the 'claim' on the domain, no one else can go for it. Their success is pretty...
Not much of a domainer, but I tend to be forward looking and try to pick up a few good domains in any country I have an interest in maybe moving to.
Found out about this place from Ned over at DBR, looking forward to being a contributor here