With the arrival of the iPhone 3G in Canada and the United States, people questioned how much the data would cost. In Canada, Rogers pull out the six gigabytes for $30/month deal at the last possible moment, whereas folks in the States can surf all they want for the same $30 a month. What happens when you cross a border, though?

That unlimited data through the AT&T iPhone sounds all well and good while you stay within the United States, but as soon as you go outside the country, you can prepare to get gouged. Previously, AT&T only offered two data roaming plans — $24.99 for 20MB or $59.99 for 50MB — so now they’re expanding the lineup.

The new plans aren’t exactly any cheaper, per se, but they do offer a little more international data for globe-trotting iPhone owners. You can get 100MB for $120 or 200MB for $200. Still very expensive, don’t you think?