Madden 17 has been on sale a few times since its launch, and will probably be on sale a few more times before Madden 18 releases. Todays price is a pretty damn good one, $20.
Amazon currently has the game as part of its Deal of the Day offer. This price is only for the physical version on the game, but $20 is a great price. Here is the PS4 version and Here is The Xbox One version.
For $20 Madden 17 is a great deal and offer a lot of game play, especially if you play the Ultimate Team Mode.