Not Without My QC

I've meticulously noted everything I need to do before leaving on my trip to the US but I just realised that I forgot one thing.

I've been meaning to replace my Bose QuietComfort ANC headphones. I bought a pair of the first generation product back three years ago and they've made a huge difference during the hundreds of hours I've spent in planes since then. However, after three years of abuse, they are on their last legs.

I want to buy a pair of the second generation QuietComfort 2 headphones. Problem is, I have no idea where I can buy them (in person, they won't have time to be shipped) in Perth.