I just found the official rates T-Mobile will charge IPhone users in Germany:
As usual, unused talk minutes and SMS will expire at the end of each month.
But the main bummer is in the fine print: T-Mobile will limit the bandwidth to a maximum of 64 kbit/s (8KB/sec) downstream and 16 kbit/s (2KB/sec) upstream after 200MB for "Complete M", after 1GB for L, or after 5GB for XL.
Thanks, T-Mobile, for making not buying an IPhone this easy.
(via fscklog)