a)Yup.
b)Yup, just your regular 230V there.
c)I don't think so.
All in all I've bought a few things and sold a few things via EBay to and from Germany. Haven't had any problems really. I usually pay by direct banktransfer (because that's free inside the EMU (or perhaps even inside the whole of EU?)).
-edit-
:lol: @Amigakit