Twitter wants to charge users based on purchasing-power parity

plans to charge Twitter users $8 a month for a “verified” account, and to adjust the fee based on “purchasing-power parity”. How might that work? Think about what $8 can buy in America. Then imagine how much similar items would cost in, say, India—roughly 187 rupees on average, according to the . That is what Twitter might charge in that country. Converted at market exchange rates, 187 rupees is less than $2.40, making verification look relatively cheap in India. Compared with India’s income per person, however, it still looks relatively dear.