I look at it as Actual price = menu price + lowest suggested tip + $5 tip awkwardness penalty. So a place near me has a $12 lunch-size sub sandwich that’s really good. But they ask for a 15% tip. So rather than just never eat at my favorite sandwich spot, I regard it as a $18.80 lunch and only buy it on rare occasions or when my company is paying.
I look at it as Actual price = menu price + lowest suggested tip + $5 tip awkwardness penalty. So a place near me has a $12 lunch-size sub sandwich that’s really good. But they ask for a 15% tip. So rather than just never eat at my favorite sandwich spot, I regard it as a $18.80 lunch and only buy it on rare occasions or when my company is paying.