Add a call to the permissioning subsytem (like a real site would).
Also, how do you present a screen to a user to input something as simple as an address?
That user lives in Switzerland.
And another lives in Cuba
And another lives in Japan
The web operator also needs to send out his order to a fulfillment house and they only accept xml output and the addresses must be validated. If they have more than a 5% error rate on postal addresses they get charged more.
Just some examples.
