@nandric What is the import tax in the Netherlands if you got an incoming parcel not from the EU ?
You will immediately pay import tax once your shipper declares the real value of the cartridge (for example if your EUR 1300 cartridge is insured to full value you will pay import tax from the full value, so you will pay at least 260 EURO tax which is 20% I believe).
The insurance will cost you not only the modest price of insurance itself, but in addition it will cost you 20% of the total value. Of course you do not pay import tax if you bought it from the EU, but if you bought it from the USA you will pay import tax and the reference for your custom control in declared value on your custom declaration. The import tax in the EU is extremely high in every country and in some countries they will summaries the cost of shipping and the cost of goods to change tax from the total.
If your parcel is not insured your custom has no idea of the real value and your shipment can declare $20 instead of $2000, so there is no tax at all.
In my country no one drops a parcel by the door like in the USA, I pick up my parcels from the post office myself and they are fully trackable.
So in my opinion insurance for international shipping is nonsense.
For domestic shipping insurance is a good option.