"I enjoy visiting your shop every morning, but I have to say that your prices are quite steep, especially considering the quality of the food. The chocolate items, particularly the hot chocolate, have an earthy taste that doesn't quite appeal to me. I really don't think I should be paying $5 for something that tastes like it came from the ground. I kindly urge you to reconsider your prices and revamp your recipes, as most of the other items are just mediocre as well.
Sincerely,  
[Your Name]"