No, it's not typical to get US keyboard Macs in NL. All physical stores (and most online stores) including Media Markt and the official Apple store only stock ISO layout.
Fortunately it's simple to order the ANSI (US) layout in the online Apple store these days. (US English, not International English!). Up to maybe 10 years ago or so it was pretty hard to get it with US keyboards in Europe. (I usually imported them from the US via eBay.)
The warranty is really worth considering. I recently had to get a repair on an 18 month old laptop, and even though it was out of Apple warranty, the repair was free under consumer protection laws, and would not have been had I bought it in the US.
I'm honestly not sure why you would ever pay for an extended warranty in Germany.
Ordering in EU is easier especially related to warranty. But the price is steep: it is 1199 USD in the US versus 1519EUR in The Netherlands, including sales tax