Amazon - Samsung 850 EVO 500GB SSD - ~ $245 NZD ($156.10 USD) Delivered

About $15 cheaper than last time, might pay to stock up on this stuff just in case import GST changes happen overnight.

Cheapest locally is ~$370 according to Pricespy.

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