By Shannon Carlin, Radio.com
Katy Perry definitely doesn't have to worry about paying her rent, that's for sure.
Perry's high performance this year was due mostly to her Prismatic World Tour, which grossed more than $2 million per city over the course of 126 shows—75 of them were overseas. She reportedly also drew in $20 per head in merchandise sales. That's a lot of Katy Perry shirts.
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