I've got a 3DS XL collecting dust that I haven't really used since purchasing it about a year ago. It comes with Pokemon X, 4GB SD card, two styluses, a case, a UK charger (I can include an adaptor if necessary) as well as the original box and manuals. In good condition, a few very minor cosmetic scratches on the back plastic. It's the full black model - not sure you can get these in NZ.
Firmware is version 7.2.0-17U - yes this is an exploitable firmware, so it's actually worth a bit more because of this.
Please note this is an NTSC model - so games you buy directly from NZ retailers are unlikely to work here (NZ 3DSes are PAL I believe). However, it does mean you can buy cheap games from Amazon or other overseas sites, so probably a good thing to the right buyer.
Because it's NTSC and a good firmware (and includes a game), I would like to get something a bit over $200 for it. Happy to include shipping as long as it's not too expensive.