What can you think of such “cheap” offers (NO rental purchase)

hello, am looking for a new boxster. I am looking for a few real-time “favorable” offers in the net. e.g. at http://www.neuwagenschnaeppchen.de/ you should get e.g. 7.51%. here’s even more:http://www.autoscout24.de/Details.aspx?id=4ppjhzh4iouhttp://www.autoscout24.de/Details.aspx?id=jzpjhpibsxs or also here:http://www.autoscout24.de/Details.aspx?id=4psfe1huftz also found intercar-24.de that have almost everything in the pogram, but unfortunately no porsch e. there offer the e.g. audio with – 16 % to etc.. everything allegedly no rent-purchase or other fake-offers as they often occur with mobile and autoscout. allegedly also without advance cash and no reimports. delivery at the dealer etc…. have already searched in several forens, but found only little. or. if then not necessarily with a clear statement…. what do you think about it, or maybe even someone has already ordered a car there and also got it? especially this ang ebot http://www.autoscout24.de/Details.aspx?id=4ppjhzh4iou I find interesting . are about 10 %!!! or can I also expect to get that from the dealer around the corner. (here in the forum is more often spoken of about 3-5 %…) thank you!