https://www.technirub.nl/verzendkosten

Wonder if there is a low cost airline flying to lelystad (airport) and then take the bus to collect it in person.
Visit the museum on the way back would make a nice day trip

My guess is that they just posted a "ballpark" figure for there "average" order most likely a few meters of extrusion profie.
A quick call will aswer that, there is no language barrier to worry about

Or else either ask a local (cough or order a life supply at once. With the the price difrnce it will become economical quickly