Ordered it yesterday for 20,00€ from www.buecher.de with this 13% voucher: TWJE-BRJQ-Y9S5-1W2N
The code works until Oct 26th. Since this is at least for Germans the cheapest price you get, I thought I'd share it here.
Shipping within Germany is free of charge, 3,95€ to Austria, rest 6,95€.
They deliver to the following countries:
Belgium, Bulgaria, Denmark, Germany, Estonia, France, Finnland, Great Britain, Greece, Italy, Ireland, Luxembourg, Latvia, Lithuania, Malta, Netherlands, Austria, Poland, Portugal, Romania, Sweden, Slovakia, Slovenia, Spain, the Czech Republic, Hungary and Cyprus.