Think of motor vehicles. Their price has not dropped for imported vehicles, even though exchange rates have improved.
Stability and sustainable pricing levels is an issue that all importers need to consider.
If they drop prices this year, and exchange rates fall next year they will suffer a huge drop in sales due to prices increasing later.
how pricing changes depends mostly on the impact parallel importing has between markets - cars are protected by import and compliance legislation that essentially means only the authorised importer gets to set the price.
bikes however are open slather and we can all import a bike relatively easy. Some manufacturers treat aus customers realtively the same as US customers - eg Giant. others, treat aus customers as opportunities to make a greater margin - eg santa cruz, intense, and to a lesser extent specialised.
Same thing in electronics - sony thinks it is a premium brand in aus, while it competes on price in the US with panasonic - for cars, bmw competes in the US directly with VW, honda etc, here, they price themselves way above these brands and go for perceived value and far greater margins.
So what was my point - its not bikes per se, but individual brands.
having just got back from hawaii, the various worldwide brands relatively rip aussies off by market positioning. either buy said products online overseas or not at all - but buying a crap 3 series bimmer in aus for $100k or $150 for a ralph loren polo shirt, again merely advertises either your stupidity or need for acceptance ;D ;D
Besides best price is always achieved by buying the outgoing model at the right time of year IMO - its the 30% discount that makes the diference not the 5% of exchange rate price reduction.