Hi there, Do they sell the Shanghai Public Transportation Card at Pudong Airport?

Yes, you can buy the card in the airport. If you cannot find the exact place, you can ask the airport staff for help.
The ordiary cards are usually rectangle without any special pictures or meaning on the cards.
The souvenir cards are usually published on a certain day to commemorate someone or some big events. Some people buy it for storing.
The transformed card usually has certain shape from the ordinary ones.