Just posted you a message on the German thread but will give the info here too incase you don't check back.
DM are fab if you get a good one - cheapest place for nappies.
Schlecker - buy food in bulk, easier and cheaper, dont shlap up there - shop online here-
For all the "other stuff", bibs etc - [[www.baby-markt.de baby markt] are the cheapest and don't charge delivery on orders over 20Eur, but the range is not always so good. Another good one is babybutt.