Quick search on Amazon Germany
http://www.amazon.de/JBL-8-Kanal-Car...2603527&sr=1-1
Coming out at
€599 (£500 approx) New
€533 ( £445 approx) Used
Before shipping of course but still a healthy saving.
I ordered mine on eBay, just got lucky, worth having a bit of research on google for local audio shops as well, might be able to email a couple for a better deal, whatever you do I'd use a credit card for a bit of extra protection. Should be ok with Germany though
Just a suggestion mind!