https://www.humblebundle.com/weekly
Humble Weekly bundle has a few Pinball FX2 tables. Steam required as far as I know.
Pay $1 or more for Pinball FX2 Zen Studios F.C., Pinball FX2 Guardians of the Galaxy, Pinball FX2 Star Wars Pinball Balance of the Force Pack, Pinball FX2 Iron & Steel Pack, Pinball FX2 Marvel's Avengers: Age of Ultron, and Pinball FX2 Venom.
Pay $5 or more to also receive Pinball FX2 The Walking Dead, Pinball FX2 Civil War, Pinball FX2 Ant-Man, and Pinball FX2 Star Wars Pinball: Star Wars Rebels.es by Zen Studios 3 in their bundle. All are redeemable on Steam.
Sale ends on the March 10th or so. Total value about $38 bucks or so.