The website say's the price is reduced from $39, but I think it's the free shipping that makes this a techrific deal for those who can't get themselves to a store with reasonable prices.
Note: The $8 Shipping Insurance is compulsory, but I don't think it kills the deal. As I said, it's good for those who can't get to a physical store…
Also: You only pay $8 Shipping insurance for multiple items, so buy 2 and it's $23 each; buy 4 and it's $21 each. Link: http://www.techrific.com.au/shipping_insurance.php
Features of Team Elite So-DIMM 4GB DDR3 1333MHz Notebook Memory Card (Lifetime Warranty):
Suitable for: Notebook
Module Type: 204Pin Unbuffered SO-DIMM Non ECC
DRAM Density: 128x8, 256x8
Data transfer bandwidth: 10,664MB/Sec (PC 10660)
CL-value: 9-9-9-24
Working voltage: 1.5V?0.075V
PCB 8-layers PCB
Extra features: No
Might be free shipping, but must pay $8- for shipping insurance.