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Steam has the F1 Series 66% off as the daily deal for 3/15
F1 2014 $17
F1 2013 $10.19
F1 2010 $3.39
F1 2011 $5.09
F1 2012 $8.49
F1 Race Stars $5.09
F1 Race Stars DLC 66-67% off.
F1 2013 Classic Edition $17
F1 2013 Classic Edition Upgrade $5.09
F1 Classics: 1990s Pack $3.39
F1 Classics: Classics Tracks Pack $3.39