Not only does Taylor Swift bring in the fans when her concert comes to town, but the pop superstar also generates big bucks for the local economy. Economists estimate her six-night run at SoFi Stadium could add $320 million dollars to LA County's GDP. The average concertgoer is spending over $1300 to go to just one of her shows. A market research firm thinks Swift's entire Eras Tour could bring in $5 billion worldwide.