I'm really surprised that it cost so much. Did you ask about the printed papers rate? It's only for printed material, and it's slower than regular post, but it's usually much cheaper.
Also, with regards to import duties, etc., when it's charged, the charge is based on the value of the item. So unless these are valuable antique newspapers, then even if your friend were to be charged, it would likely be just small change. I'm not sure they'd even bother.
So I wouldn't worry too much, but just keep the printed papers rate in mind for next time.