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50 people paid £1000 a month for the ongoing use of the magic. 50 people paid £100 a month but the elves were happy, they needed £55000 to make a profit.
Then a wizard said it was unfair, everyone should get the cheap price. So he cast a spell enforcing the cheapest price for everyone.
Now the company only made £10000 a month! Disaster!, quickly the company elves recalculated the prices,if everyone was on the cheapest price, then they needed to raise it!
£55000 divided by 100 was £550,so they made that the new cheapest price and the higher price £10000. Now everyone paid £550
50 people were very happy, but the other 50 were very, very sad.
The wizard was very happy indeed. But no one had ever liked the wizard anyway.