The case finally arrived today, yay. Too bad, I won't have time to assemble it this week, oh well, by now it doesn't matter waiting yet another week
So to sum up the ordering process:
10th July: Ordered Case, Shipping date 31st July
27th July: Received Tracking No.
31st July: Case arrived in germany, was held back from general customs office in frankfurt
1st August: Sent paperwork to clear customs
5th August: Paperwork arrived at the customs office (letter delivery was way slower than usual, normally letters are delivered the next day)
7th August: Customs cleared
10th August: Package arrived at my destination