• because: increases profit
    • but: (co) segementation necessary
    • because: stimulates consumption
      • because: incentive effects
    • because: capture consumer surplus
      • because: highest price one wills to pay
        • but: supplier-set prices lower than customer would pay
    • but: difficult to get information
      • because: discovery of lowest price
      • but: one on one marketing
      • because: unavoidability of lowest price
      • because: fake information
      • but: self-selecting process
      • because: discourages consumption
        • because: customer's uneasy feeling
    • but: harms profit
      • because: reselling of goods
        • but: geographic restriction
          • because: Barriers to entry
            • because: Import licenses can be a barri
            • because: Import taxes can be a barrier
            • because: Import quotas can be a barrier
          • because: high transportation fee
        • but: policy of non-reselling
        • but: non-transferable goods
        • but: thin market
  • but: universal low price
    • because: efficient advertising
      • because: case of FogBugz
        • but: Spolsky's IT blog website markets FogBugz ,at the bottom of the home page and
Price Discrimination is an advantageous practice in a market economy
  • because: best prices impossible to calculate
  • because: good social effects
    • but: negative social effect
      • because: case of AIDS drugs
    • but: increases social crimes
      • because: e.g. drugs traffick
    • but: not original intention
      • because: economic oriented
    • because: social morale
      • because: e.g. off-duty police
    • because: helps the poor people
      • but: unfair exploitation
        • Solution: unfair pricing can be curtailed the HK...
        • Solution: unfair pricing can be curtailed the HK...
      • because: lowers price for the poor
    • because: limits inequalities
      • but: increases social conflicts
        • because: recognition of discrimination
      • because: charges proportionally