1998 Upper Deck Game Jersey Tim Duncan #GJ31

1998 Upper Deck Game Jersey Tim Duncan #GJ31 value & prices

The 1998 Upper Deck Game Jersey Tim Duncan #GJ31 is a Basketball card released in 1998. Ungraded copies carry a market value of about $327.50.

An ungraded copy is worth around $327.50, a PSA 9 around $739.93, a PSA 10 (Gem Mint) around $1,871.98, a pristine BGS 10 around $2 and434.00. That's roughly a 5.7× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.

Is it worth grading?

With raw copies near $327.50 and top grades reaching $1,871.98, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.