Marketplace
Casio G-Shocks Up to 59% off at Kogan
Check eBay and Amazon before purchasing for better prices (see comments below - stock levels may vary)
Don't forget to register your Qantas Frequent Flyer details to take advantage of the 10 QFF pts / $1 spend deal
My top picks:
G-Shock GSTS100G-1A Black/Gold $239 Delivered RRP$499
G-Shock GA110GB-1 Black/Gold $138 Delivered RRP$289
Had a mate buy the GSTS100G a few months ago from a bricks and mortar jeweller for >$500.
Looks very swish, a very nice addition to the watch collection and suits both casual and formal situations.
You may be able get some of the watches at a lower price through their eBay store with the 5% off P5OZZIE code.
E.g. G-Shock GSTS100G-1A Black/Gold $239 on their website vs $234.99 on their eBay store with the code
Full list of G-Shock watches on their eBay store. And yes, the prices without the code are higher than their website, however some watches may be cheaper with the code.