SHANGHAI - Many Shanghai residents who have received free Expo tickets in gift packs are now making quick and easy money by selling them at a rate lower than at authorized ticket booths.

As the municipal government is distributing 2.5 million free Expo tickets to Shanghai permanent residents, the locals are keenly involved in various kinds of ticket sales for money and convenience.

More than 3,781 free tickets have been sold since June 1, according to ganji.com, a popular classified website in Shanghai.