Hi, mvdarend
If you really want to buy an Echo delivered to the Netherlands:
1) Create a free 3rd party delivery box at ShipTo, or Viabox, or USABox. I read some dodgy remarks about Viabox, but I used them and received my Amazon Echo in South Africa.
2) Create a free Amazon account, with the above address
3) Not sure, but Amazon had a free Amazon Prime trial for a Month. This gives you free delivery from Amazon to your American box address. You can cancel you Prime thereafter.
Note: The 2nd Gen Echo Dot is half price currently!