Amazon.com - Samsung 850 EVO 500GB 2.5-Inch SATA - ~$260 NZD Delivered

Same product as last month but slightly cheaper this time.

Around $100 - $150 cheaper than local prices, and this wouldn't be subject to duty/GST.

Capacity: 500GB
Form Factor: 2.5 inch
Interface: SATA 6Gb/s (Compatible with SATA 3Gb/s & SATA 1.5Gb/s)
NAND Flash: 32 Layer 3D V-NAND
Thickness: 7.0 mm
Optimized performance for everyday computing needs
Sequential read speed 540 MB/s; Sequential write speed 520 MB/s; Random read speed 100K; Random write speed 90K
Energy efficient - improves battery life by up to 50 minutes vs. hard disk drives
Worry-free data security with AES 256-bit, TCG/Opal v.2 and Microsoft eDrive full-disk encryption
Backed by a five-year limited warranty
Cable, screws, and bracket sold separately