2K sports has served up a doozy with four unique downloads of In-game content for the Xbox 360. These Stadium packages for MLB 2K7 range in price from 300 - 800 MS points, and get you access to Nine classic stadiums if you download all four. Full details below. Thanks to Major Nelson for the info.

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MLB 2K7: In game content
Name: MLB 2K7 Historic Stadium Bundle In-Game Content
Price: 800 Points
Availability: All Xbox Live regions
Dash Details: Get all 6 cool, historic stadiums for MLB 2K7 including: Sportsmans Park (St. Louis Cardinals and Browns), Forbes Field (Pittsburgh Pirates), Griffith Stadium (Washington Senators), Shibe Park (Philadelphia As and Philles), Polo Grounds (New York Giants and Mets), and Crosley Field (Cincinnati Reds).

Name: MLB 2K7 Historic Stadium Package 1 In-Game Content
Price: 300 Points
Availability: All Xbox Live regions
Dash Details: The original Sportsmans Park opened in 1881. It burned down twice between 1881 and 1900. The version you see here was built in 1901. It housed the St. Louis Cardinals and St. Louis Browns for portions of its existence. It was renamed Busch Stadium in 1953. It was demolished in 1966 after the Cardinals moved into the first new Busch Stadium. Forbes Field was built in 1909 and was home to the Pittsburgh Pirates until 1970. It was the first stadium to install foam-rubber crash pads on the outfield walls. It was demolished in 1971 after the Pirates moved to Three Rivers Stadium. The NFLs Pittsburgh Steelers also played here.

Name: MLB 2K7 Historic Stadium Package 2 In-Game Content
Price: 300 Points
Availability: All Xbox Live regions
Dash Details: Griffith Stadium was built in 1891. It burned down 20 years later and was rebuilt in 1911. Originally named National Park, it was renamed Griffith Stadium in 1920, after Washington Senators owner Clark Griffith. It housed the original Washington Senators from 1903 1960. They then moved to Minnesota and became the Twins. It then housed the second Washington Senators for one season, 1961. Shibe Park was built in 1909 and housed the Philadelphia Athletics from 1909 - 1954 and the Philadelphia Phillies from 1938 1970, as well as part of the 1927 season. The high wall in right field is known as the spite wall because it was built in 1935 to prevent neighbors across the street from watching games for free from their rooftops.

Name: MLB 2K7 Historic Stadium Package 3 In-Game Content
Price: 300 Points
Availability: All Xbox Live regions
Dash Details: Polo Grounds' oddly-shaped outfield fence, with extremely close walls down the line and one of the furthest walls ever in center, is the defining characteristic of this stadium. The Giants played in the Polo Grounds from 1911 1957, when they moved to San Francisco. They shared the stadium with the New York Yankees from 1913 1922. Crosley Field, originally called Redland Field, was built in 1912 and housed the Cincinnati Reds until 1970. The struggling Reds franchise was purchased by Powel Crosley in 1934 and the stadium was renamed after the man who was considered to have saved the franchise. Crosley Field is the site of the first ever major league night game, which was played in 1935.