Thanks for your input. What worries me is that I receive no reply to my messages through eBay.
As for parcels, yes, that's true, German customs are extremly tough when it comes to inspecting parcels sent from outside the EU because they will charge the addresse an extra tax for importing goods from states outside of the EU as well as a fine for tax fraud. The last time I had to go though this sh*t was back in June.
However letters (small regular ones and large envelopes) never get inspected and pass customs in no time.