Which pricing strategy in restaurants is known as 'charm pricing' and is widely used on menus to increase sales?

In the competitive world of food retail and restaurants, pricing strategies are carefully crafted to influence consumer behavior. Behind every menu and price tag lies psychology, marketing wisdom, and strategic thinking. This trivia question explores one of the fascinating tactics used by food businesses to shape our perception of value. Test your knowledge about the subtle science of food pricing!

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Prices ending in .99 or .95 (like $9.99 instead of $10)
Removing currency symbols from prices to reduce 'pain of paying'
Placing high-profit items in the upper right corner of the menu
Using round numbers for premium dishes to suggest quality (like $20 instead of $19.95)