The shipping costs are based on weight, volume, delivery address and subtotal of the order.
Indication of shipping costs:
Standard mail*: €2.50
Parcel Basic NL: €5.95 (free from €100)
Parcel International: See link below
Pickup in Eindhoven: €0.00
*The system will automatically decide if standard mail is possible. If not, then only Parcel and Pickup are available.
See this page for extra shippings options and explanation about the shipping costs: Shipping
You can easily connect his "Shield" onto for example an Arduino Uno(5V), Arduino Mega(5V) or Arduino Due(3.3V).
The shield also has a micro sd-card connector so you can, for example, save images on it. These images can then be integrated into a site.
There are different versions of the internet shield, the delivered version is the same one as in the picture with the W5100 chip.
Th software does stay the same (standard ethernet library from the Arduino software).
For more information check out: http://arduino.cc/en/Main/ArduinoEthernetShield (This is a new, but similar variant).
Please note: The internet shield uses quite some current (about 200mA). Keep in mind that, because of this, you can connect less things to the Arduino (taht also draw a lot of current).