Ungraded vs Grade 8.0 Avengers #155 (1977): price difference
Avengers #155 (1977) value — Ungraded $10 vs Grade 8.0 $33. Grade 8.0 sells for 3.3× Ungraded (+230%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 3.3× (+230%) the Ungraded price — a $23 difference per comic.
Grade 6.0 sells for 2.5× (+150%) the Ungraded price — a $15 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Avengers #155 (1977), the jump from Ungraded to Grade 8.0 is worth $23 (3.3×) — 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).