Music
Rex Features
Touts on the auction site are selling tickets for this weekend's show in Central Park for around $1,000.
On their official message board, the band insisted that they "always had the best interest of the fans at heart".
The band added: "There are reports in the media about tickets being scalped for... the free concert. I for one am not surprised, but our organisation is sorely disappointed."
The original 60,000 tickets were given away to fans at outlets around New York.
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