↑The episode roster of each season that is indicated in this article is derived from the episodes grouped on each season's DVD, as seen at sources such as History.com and Amazon.com. This arrangement is also corroborated by Netflix's streaming media service for the series. Another source that is consistent with the end of the third season and the beginning of the fourth season is this October 2010 Bloomberg Businessweek article stating that Rick Harrison was in talks at the time for a fourth season. A minority source that lists a different episode list for seasons 3 and 4 is iTunes.