In Denmark the limit is 80 DKK, which is ~11 EUR. And in my experience they do hold everything back in customs from outside EU that is over that limit. This not only costs but usually adds another week or two to the shipping time.
Ouch, that's painful.... I can't recall if they undervalued the sets on the packages and I don't have the packaging any more, so I can't say if the set would be flagged for processing or not.
I still think they're worth the money, though, even with the cost ending up double. It's hard to find blank white sets at the moment.
Do they do the same BS there as here where they include the shipping cost in the item price for calculating the fee? Quite ridiculous IMHO.
P.S. - I found the same set on ebay.co.uk, but they also ship from Asia. Also a 104 key blank white PBT set from Asia and some light gray ones from USA...