![Gary Sheffield [Upside Down] #13 1989 Upper Deck Baseball](/api/images/junkpal-products/sports/gary-sheffield-upside-down-13-baseball-cards-1989-upper-deck-sport/cover.webp)
Ungraded vs PSA 10 Gary Sheffield [Upside Down] #13 1989 Upper Deck Baseball: price difference
Gary Sheffield [Upside Down] #13 1989 Upper Deck Baseball value — Ungraded $3 vs PSA 10 $500. PSA 10 sells for 166.67× Ungraded (+16567%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 166.67× (+16567%) the Ungraded price — a $497 difference per card.
PSA 10 sells for 20× (+1900%) the Grade 9 price — a $475 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Gary Sheffield [Upside Down] #13 1989 Upper Deck Baseball, the jump from Ungraded to PSA 10 is worth $497 (166.67×) — if your copy grades at the top, that premium can cover the fee. A grade below the top one changes the math, so run your exact numbers first.
Run the grading break-even math →Values are estimates from real sales data — not appraisals or offers. Some links earn JunkPal a commission at no cost to you (disclosure).