Question about Dell XPS 15 7590

Why does this device cost so much more with you than with Dell? https://www.dell.com/de-ch/shop/notebooks/neu-xps-15/spd/xps-15-7590-laptop/cn79015 Even without the promotion, which runs until 5 February 2020, the basic price with Dell is still cheaper. Or is this a different device and if so, why don't you have this one on offer?