Am idly thinking of getting a laptop from the UK. Might not happen. But anyway, it would be over $1000NZ so I guess I need to fill in that NZCS224 form. Therefore, am wondering  - does timing matter, I can order laptop and then fill in the form and it won't be sitting in customs for 6 months while they get round to checking the form and registering me.

OTOH, if I bought through Amazon (US or UK), I believe they do the import duty thing, therefore its all in the price ? And do I still need to fill in that form ?

If necessary I can do whatever's required myself - I thought I saw something about having to use a broker and hence pay yet more fees for one of those or is that untrue ?