Just out of curiosity for all those who have an iPhone, has anyone got a bill for one yet?

I am curious after being in New York and watching a program about people complaining about iPhones being the biggest mistake they every made... Apparently, and I don't have one, the thing is online the whole time and unless it is online it is pretty well a normal phone. If it is online while you are roaming then the costs are big - there were two guys on there who had been on holiday abroad for two weeks and had bills of $5K and $6K when they came home...
Anyone being travelling with one of the things yet?