Halo: The Master Chief Collection for $29.99 shipped.  Here is a screenshot for reference.  It features a re-mastered Halo 2: Anniversary, along with Halo: Combat Evolved Anniversary, Halo 3, and Halo 4, new digital series, Halo: Nightfall, and access to the Halo 5: Guardians Beta.  Most places have it for about $39.