Online Selling Shockers

What shocks me the most is when a "serious" site like Amazon has something like this: two exactly the same products, both sold & dispatches by Amazon (!!!), even slightly more expensive postage on the more expensive product, offered at the same time on the German Amazon. Yes, the first product is on discount (37%), but at the same time you can buy from the same seller (which is Amazon), if you get confused or if you are not careful enough, the same product that is not on discount? Inexplicable.





EDIT:

Huh, what? Did I just found a third one? Oh, yes I did! Again, dispatches & sold by the same seller - Amazon:



How can this happen? Are German Amazon employees allowed to drink beer while editing the site?
Several prices for the same product... Is this even legal?