UPDATE (April 6th, 2020, 11:30 am): The Fire TV Sticks are currently not in stock on Amazon. You can still order it, but the delivery date will be 3 May 2020. Alternatively, you can currently get the devices from Media Markt (only the normal stick, the 4K stick is no longer available) and Saturn, also at a great price. Here, however, there are still shipping costs on top.
The Fire TV devices that Amazon has on offer can be seen in the list below. We have calculated the real discount at the previous prices of the past weeks: