Ungraded vs Grade 8.0 Uncanny X-Men #231 (1988): price difference
Uncanny X-Men #231 (1988) value — Ungraded $5 vs Grade 8.0 $46. Grade 8.0 sells for 9.2× Ungraded (+820%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 9.2× (+820%) the Ungraded price — a $41 difference per comic.
Grade 8.0 sells for 3.54× (+254%) the Grade 6.0 price — a $33 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Uncanny X-Men #231 (1988), the jump from Ungraded to Grade 8.0 is worth $41 (9.2×) — 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).