Mike Hartley Rookie Cards

Do you know that the most expensive Mike Hartley Baseball Rookie Card (Bobby Rose/Mike Hartley 1990 Fleer Major League Prospects Rookie Card #651) was sold on eBay in 04/2026 for $5.99 while the cheapest Rookie Card (Los Angeles Dodgers - Mike Hartley – Rookie Card) changed hands for only $0.15 in 11/2025? The month with the most cards sold (3) was March 2025 with an average selling price of $1.79 for a Baseball Card of Mike Hartley. Sold items reached their highest average selling price in April 2026 with $5.99 and the month that saw the lowest prices with $0.17 was July 2017. In average, a Rookie Card from Mike Hartley is valued at $1.69.

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