Ungraded vs Grade 8.0 Heavy Metal #15 (1978): price difference
Heavy Metal #15 (1978) value — Ungraded $22 vs Grade 8.0 $35. Grade 8.0 sells for 1.59× Ungraded (+59%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Ungraded vs Grade 8.0
$22→$35
Grade 8.0 sells for 1.59× (+59%) the Ungraded price — a $13 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Heavy Metal #15 (1978), the jump from Ungraded to Grade 8.0 is worth $13 (1.59×) — 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).