Tear off or bargain????

Hey hey.. I have a nightster to buy. At mobile.de I found a very cheap offer. But the price seemed so improbable that I grabbed the phone and called the dealer. He clicked on me that it was about an import model and he got it from Belgium. Everything was good and nice. All papers should be there and everything should go very simply with the registration. When I approached the good man on the VAT, he said that I did not worry about As soon as I had registered the machine at the registration office, he would pay the tax. The guys from the registration office said on my request that I had to be careful and the tax office would definitely contact me. Here is the page of the offers: http://home.mobile.de/TRADITIONAL AGENCYMIGUELDASILVA Now my questions: Can I somehow “redirect” the claims from the tax office to the seller. d Has anyone already had experiences with the trade agency in Münster?? Hope you can advise me….