Through the Amazon website, South Park Pinball is $3.99
BUT ... if you go thru the Zen Pinball HD app. on your Kindle, Amazon App. Store has each table individually priced at $1.99 ea. (or 199 Amazon Coins +tax) AND it earns you 60 Amazon Coins with purchase.
South Park: Super Sweet Pinball
South Park: Butters' Very Own Pinball Game