While Perry's "PRISM" brightens the top of the chart, the rest of the albums on the tally sell far fewer copies. In fact, "PRISM" outsells the Nos. 2-9 albums combined. In turn, overall album sales fell to a historic low this past week: 4.49 million albums were sold, falling below the SoundScan-era (1991-present) low that was set in the week ending Sept. 15 (4.54 million).
