Of course I'm not seriously suggesting that G-Shocks should be considered a good investment, or that they can make you any money.
I was looking at a thread on another forum about watches (slightly more expensive watches than G-Shocks ) as investments, and one of the posters mentioned that he had made an average loss of 11%, which made me wonder.
I keep a spreadsheet of what I bought, when, how much I paid, when I sold it, and how much for (bit sad, I know). Anyway, I'm currently running at -5.86%
So, G-Shocks: cheaper to buy, no servicing costs, better re-sale value. win:win:win