"Mariners minority owner Chris Larson had a final ruling delivered in his divorce case this morning. In it, King County Superior Court Judge William Downing concluded that, based on evidence presented at trial, the Mariners have a total franchise value of $641 million.
Forbes magazine back in March had estimated the franchise to be worth $449 million, compared to an average MLB team value of $523 million. Today's figure, based off the ruling, would put the M's fifth highest on the Forbes list of the 30 big-league teams. But it's worth remembering that this latest court estimate is coming in after the 2011 season has been played and not prior to it like the most recent Forbes list.
Also, Forbes appears to have dramatically underestimated the M's value, so it's possible they have done the same with other teams on the list."