Mike Schooler Rookie Cards

Do you know that the most expensive Mike Schooler Baseball Rookie Card (1989 Upper Deck Mike Schooler Rookie Card (RC) #28 Mariners Pitcher VG Centered!) was sold on eBay in 03/2025 for $88.74 while the cheapest Rookie Card (mike schooler (seattle mariners - pitcher) 1989 donruss ROOKIE card #637 mint) changed hands for only $0.30 in 08/2020? The month with the most cards sold (5) was March 2026 with an average selling price of $2.10 for a Baseball Card of Mike Schooler. Sold items reached their highest average selling price in June 2025 with $35.00 and the month that saw the lowest prices with $0.30 was August 2020. In average, a Rookie Card from Mike Schooler is valued at $1.99.

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