It's apparent to most observers that Apple rarely changes the prices of its products.
By and large, a new product comes out, the price is set, and that's it - at least until there's a new and improved version, and then if the old one isn't withdrawn its price might be reduced.
So when Apple picks the price of a new model, it's placing a bet on what's going to happen to currency exchange rates.
One Australian site crunched the numbers based on an exchange rate of US$1=AU$1.09, and concluded that we were being asked to pay around $100 more than US buyers.
At the time, I remarked to my iTWire colleagues that I thought this meant Apple was expecting a drop in the value of the Aussie dollar.
And what happened?
The iPhone 6 and iPhone 6 Plus ships tomorrow, and the exchange rate isn't $1.09 but $1.11 with the Aussie hitting a six-month low last night.
That change doesn't account for all of that $100, but the movement is in the direction Apple appeared to be banking on.
So if you're a currency speculator, perhaps you should watch Apple's prices closely.