No surprise really: iPhone buyers are flooding eBay with their new iPhones with bids starting from $1 and buy it now prices as high as $1500.
For those outside of the United States desperate to get their hands on an iPhone, a number of listings offer worldwide shipping; this listing for example posts to Australia for $50. However be aware that the iPhone does not support simcards and today no one has worked out how to unlock the phone from AT&T, although you could always buy it now and work that part out later (or use the iPhone as an expensive video iPod). MacNN has screenshots on the iPhone’s innards for those interested in hacking it.
If you do sign up for an AT&T plan and live outside the US, be warned that AT&T’s international roaming rates would make a drunken sailor blush.