The critical question that has already been asked is "what does he want to mix?". The mixer you linked to is specifically for DJs and useless if he wants to record live music at home. On the other hand, it might be okay if he wants to DJ live. If he wants to record live, what will he record? Just himself and a guitar or a whole band all at once? Does he have other gear needed for recording (or being a DJ)?
Unless you know the details, a gift certificate might be the best idea.
However, if you DO decide to purchase, I can also recommend Thomann. They have about the best prices in Europe, offer good service and (I just checked) ship to Norway.