WTF, that makes no sense. An iPod Touch with Bluetooth, modem and speaker/mic does not add that much to the cost.
Bad Apple.
At this stage an iPod Touch is looking better for me.
The price is set just to make a point. It's clear they don't want to sell unlocked iPhones and don't intend to since they're on contract with T-mobile. The price is high enough so hardly anyone will buy it but still low enough that some strange people -might- buy it if their life depended on it; hence following German Laws, avoiding courts and doing what they want anyway.
Easy.