Although the iPhone 4S has been available in the States for two weeks, it’s just now arriving in many European countries as well as a couple of other locations like Mexico and Singapore.

Today, Apple’s “best iPhone yet” hits the shelves in the following countries:

Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Mexico, Netherlands, Norway, Singapore, Slovakia, Slovenia, Spain, Sweden and Switzerland.

In countries on the Euro, the 16GB iPhones 4S is going to run customers around €600. For instance, in Luxembourg, the base price is €616. In The Netherlands, its €599. In Spain, €600. That’s around 850 U.S. dollars.

It’s important to remember that these are prices for the unlocked iPhone 4S. Wired’s Charlie Sorrel in Spain points out how this pricing points to the future U.S. pricing scheme of unlocked phones:

€600 is $850, and that’s for the 16GB model. It goes up in €100 step to top out at €800, or $1,133 for the 64GB model. For comparison, those are the exact same prices as the 3G iPad lineup, which will give you a rough guide to what the U.S prices will be when the unlocked phone goes on sale there, probably some time in November. Up in Canada, the unlocked prices run at $650/$50/$850 (thanks, Jon!), which should also let you see where things are headed.

The iPhone 4S has sold well in The U.S., but that doesn’t mean that it is without detractors. Some customers have reported that they are disappointed with the lack of change from the iPhone 4, especially when it comes to the physical design.

But the phone still broke records when it went on sale.

The top three draws of the new iPhone 4S are Siri, the personal voice assistant, the incredibly impressive 8 megapixel camera, and its quicker processing.