Our delivery costs (within Germany) are simply structured:

Letter dispatch (only on customer wish and till 1000g weight and 10 Euros value of articles - Attention: dispatch is not uninsured!)	2,20 Euros (till 500g) 2,70 Euros (501-1000g)
all parcels	5,95 Euros
from 80 Euros invoice value of goods	no charge
cash on delivery fee (optional; from 20,00 Euros invoice value of goods)	4,50 Euros (+ 2,00 Euros payable to DHL on delivery)
international shipping	prices to be calculated individually

We only send insured parcels by DHL. The average delivery time is 1-4 business days.
You can check the current delivery status at http://www.dhl.de/en.html