There are a few sorts of import payments terms which people tend to mix up in what they exactly have to pay. This a free translated info from Dutch custom site.
- clearance charges/import duties
- VAT (BTW in Dutch)/sales tax (omzetbelasting)
Depending on the value of the bought item you either have to pay both of them or just one of them.
On top of that it could be possible you will be charged with courier or insurance costs
Companies can also get a return of the sales tax if the item is meant for business activities.
Hope this clears it a bit up
I used to travel a lot to the USA and got home with lots of ponies and cd's. I always made sure most of them were unpacked/looked 2nd hand. Because I knew there was chance I had to pay extra for them if they decided to pick me out of the line or search my suitcase.