PDT 2/2 : Why has tipping increased?

[ahnuld]

dean, not true. If you look at restaurant prices im pretty sure you'll find that they rose proportionally to the level of wealth. Things like that dont really change over time so much because people are willing to allocate x% of their income to eating out, so when incomes rise so does the amount they will spend on dinners and the restaurant owners raise their prices.