John Costello Rookie Cards

Do you know that the most expensive John Costello Baseball Rookie Card (John Costello Signed 1988 Score Rookie & Traded #107T AU Card *Autograph Den*) was sold on eBay in 03/2025 for $6.05 while the cheapest Rookie Card (John Costello Signed 1989 Topps Baseball Card #184 Rookie RC St. Louis Cardinals) changed hands for only $0.99 in 06/2026? The month with the most cards sold (3) was June 2026 with an average selling price of $1.49 for a Baseball Card of John Costello. Sold items reached their highest average selling price in March 2025 with $3.83 and the month that saw the lowest prices with $0.99 was November 2018. In average, a Rookie Card from John Costello is valued at $1.63.

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