The Titanfall Season Pass includes 3 DLC packs each containing extra content to be released later in 2014. Each will cost $10 a piece, so the $24.99 list price will save $5 from buying each separately.
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Prices on Titanfall is constantly changing at various retailers as deals come and go. If you spot a good price at a legitimate authorized reseller, let us know in the comments and we'll check it out.