From SmashWiki, the Super Smash Bros. wiki
The Fighters Pass is a season pass created for the downloadable content of Super Smash Bros. Ultimate. The pass grants access to five DLC bundles, each containing one unique (non-Echo) fighter, one stage, and several related music tracks. These bundles, which will also be available for purchase separately, will be released periodically between the game's launch and February 2020. The Fighters Pass also includes a purchase bonus of a Mii Swordfighter costume of Rex from Xenoblade Chronicles 2. Each individual bundle costs US$5.99/¥602/CA$7.49, while the pass costs US$24.99/¥2500/CA$31.49. If the pass is bundled with the game when purchased, it will cost US$84.98/¥9,700/CA$111.48.