Ungraded vs PSA 10 Ken Phelps #177 1989 Bowman Baseball: price difference
Ken Phelps #177 1989 Bowman Baseball value — Ungraded $1 vs PSA 10 $16. PSA 10 sells for 16× Ungraded (+1500%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 16× (+1500%) the Ungraded price — a $15 difference per card.
Grade 9 sells for 10× (+900%) the Ungraded price — a $9 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Ken Phelps #177 1989 Bowman Baseball, the jump from Ungraded to PSA 10 is worth $15 (16×) — at today's prices that doesn't cover the fee — grading this one is for the collection, not the flip. 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).