Where to Get SIM-Unlocked iPhone?

Mobistar announced that the iPhone 3G will be available in Belgium from July 11th. To comply with the law, it will be available as a SIM-unlock device subscription plan being in option (so no subsidizing): 8 GB model at 529 € and 16 GB model at 619 €. To prevent the gray market as well as control availability, one would not be allowed to purchase more than one iPhone per person.
Our friend Marcello from melablog.it told us that in Italy both iPhone 3G carriers, Vodafone and Tim, will offer unlock iPhone even the subsidized ones. So, one could buy a subscription-free iPhone in Italy and use it in other countries with any carrier. Prices for the iPhone in Italy from Vodafone and Tim Stores will be: 499 € for the 8 GB model and 569 € for the 16 GB model.
One should in addition keep in mind that iPhones available with pre-paid card offer might be phone number locked even though it is SIM-unlocked, as you will change the pre-paid SIM when the associated time/SMS credit will be over. So, when looking or reading stories about SIM unlocked iPhone one should pay attention to the true meaning behind.