I wanted to buy a new MacBook Pro while here in the US but I can't buy it from the online store. The US store won't accept an Australian billing address and the Australian store won't ship to a US address.
Today, I went into the Apple Store nearby but was told they only sell the default configuration (I want more memory and the faster drive) and for anything else I should go to the online store.
UPDATE: Just got off the phone with Apple. Telephone sales has the same problem with billing country vs shipping country but the guy told me I could pay by wire transfer so I've now been able to place my order.
UPDATE (2006-06-23): The estimated delivery in US was after my departure date, so I rang Apple a couple of days ago to switch to two-day shipping. However, instead of bringing the delivery date closer, it got pushed out even further because, after changing the shipping method, the estimated ship time got postponed six days. I rang Apple last night and they assured me it would ship sooner than that and, in fact, within the next 12 hours. Sure enough, when I woke up this morning, it had shipped from Shanghai.