Do you mean the way the AUD dropped around the time of the GFC? That did suck, but the worst was in 2000 when it dropped to below 50 US cents, hitting something like 45 US cents at one point. That made importing Car Robot toys and reissues more expensive! I ended up passing up on Brave Maximus and got the Korean version 2 years later instead. :/ *sigh*
Honestly I'd be happy if the AUD stays at 80 US cents or above (because realistically that's about how much the AUD is really worth - it's been overvalued for the last few years; not that I mind one bit

).