“The pricing diversity around the world—or even within Europe—is staggering: you can pay anywhere from $94 to $377 for an 8GB iPhone 3G and between $24 and $128 for plans that may only have a (few) hundred MB worth of data or are “unlimited.” Denmark isn’t as bad as it looks, because the minimum contract is only six months and prices drop by a third if you stay after that. The Netherlands is pretty good, especially considering that you can have your iPhone unlocked for free after 12 months,” van Beijnum reports.
See the pricing chart in the full article here.