In connection with the wedding between Crown Princess Victoria of Sweden and Daniel Westling in June 2010, I mentioned examples of the official and unofficial wedding souvenirs that were on the market.
I sincerely doubt that the German company donkey products has got an official approval of its Swedish RoyalTea! If you fancy a cup of tea with Princess Madeleine, you will also support Bethanien-Kinderdörfer ("Bethanien Children Villages"), as the company claims that a part of the proceeds is being donated to the said society.
Still, I think it is rather sad that the royals are exploited this way. I got the 5 tea bags as a gift, though, but haven't tried it yet. I hope it will taste good!