WWE Top selling DVD's of the year

According to The Wrestling Observer, based on the number of units shipped this year, the top three selling WWE DVD's are:
1. Wrestlemania 25 (213,000). Released Late April/Early May.
2. The Best of Saturday Night's Main Event (128,000). Released Late 2008.
3. The Greatest Stars of the 90's (111,000). Released Early April.

Source: wrestlezone.com