Mike Gardiner Rookie Cards

Do you know that the most expensive Mike Gardiner Baseball Rookie Card (Mike Gardiner Seattle Mariners 1994 Score #721 MLB Baseball Rookie Card SEA P RC) was sold on eBay in 10/2025 for $12.06 while the cheapest Rookie Card (Seattle Mariners MLB Baseball Mike Gardiner SCORE ROOKIE PROSPECT 1991 NM Card) changed hands for only $0.01 in 11/2025? The month with the most cards sold (11) was September 2025 with an average selling price of $1.77 for a Baseball Card of Mike Gardiner. Sold items reached their highest average selling price in November 2022 with $10.00 and the month that saw the lowest prices with $0.06 was October 2011. In average, a Rookie Card from Mike Gardiner is valued at $1.83.

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