French cafe charges rude customers extra

A cafe in Nice has caused a stir by charging rude customers extra. The owner erected a sign saying that customers who rudely demanded "Un café" would be charged €7. Those asking for "Un café s'il vous plait" would pay €4.25, and those who managed to say "Bonjour, un café, s'il vous plait" would be charged just €1.40.

So is this the only cafe with a strange charging policy?
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