Katy Perry New Album 'Prism' Set to Debut #1 on Billboard 200; Expected to Sell 275k Copies

Billboard are reporting that Katy Perry's new album Prism is on course to debut at number one of the Billboard 200 chart next week.

The "Roar" singer's third studio album might sell around 275,000 copies by the end of the tracking week (Sunday, October 27th).