Crucial 16GB Kit DDR3 1600 MT/s (PC3-12800) CL11 Non-ECC, UDIMM 240-Pin Desktop Memory CT2KIT102464BA160B/ CT2CP102464BA160B
$83.20 ($77.91 + $5.29) ~ AU$114
Edit: Price went up: $85.46 + $5.29 = $90.75 ~ AU$125
http://www.amazon.com/gp/product/B00AZGZFF4
Also,
Kingston ValueRAM 16GB Kit (2x8GB) 1600MHz DDR3L Non-ECC CL11 DIMM 1.35V Desktop Memory KVR16LN11K2/16
US$93.03 ($87.74 + $5.29) ~ AU$128
Edit: Temporarily out of stock. Still can order it with the price from Amazon but need wait for restock.
http://www.amazon.com/dp/B00ID1T1DA
Crucial 16GB Kit (8GBx2) DDR3/DDR3L-1600 MHz (PC3-12800) CL11 204-Pin SODIMM Memory for Mac CT2K8G3S160BM / CT2C8G3S160BM
US$90.28 ($84.99 + $5.29) ~ AU$124
http://www.amazon.com/Crucial-DDR3L-1600-PC3-12800-CT2K8G3S1…
Why are these deals never SO-DIMM :( up vote for a good price though!