In addition to 399€ for purchasing the iPhone, the first plan starts with a monthly fee of 49€, making the cost of the iPhone + Subscription over the 2 years contract at 1575€.
Web access is unlimited, and SIM unlocking would be only charged 100€ for the first 6 months, before becoming free as defined by the law. Last but not least, all subscribers will get 10 hours of free access to Orange hotspot Wi-Fi network (even 100 hours for the most expensive plan).
One can get additional information from Orange websites:
http://iphone.orange.fr/swf/Section5.swf
http://iphone.orange.fr/swf/Section8.swf
http://iphone.orange.fr/swf/Section13.swf
http://iphone.orange.fr/swf/Section16.swf
http://iphone.orange.fr/swf/Section16.swf
