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To find that the Mariners value as a team is around 750,000,000. Consider that Frank McCourt wants 1 Billion+ for the Dodgers and is expected to get it, despite the team's being broken into pieces and leveraged to the hilt. I'm not sure if the buyer would take on the half billion in debt in addition to paying 1 Billion or not, but certainly, the damage that McCourt has done to the Dodgers should be reflected in the selling price. The Astros were just sold for 680 million (before a discount was included for the league switch).