Ungraded vs Grade 8.0 Adventures into the Unknown #28 (1952): price difference
Adventures into the Unknown #28 (1952) value — Ungraded $63 vs Grade 8.0 $272. Grade 8.0 sells for 4.32× Ungraded (+332%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 4.32× (+332%) the Ungraded price — a $209 difference per comic.
Grade 6.0 sells for 3.6× (+260%) the Ungraded price — a $164 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventures into the Unknown #28 (1952), the jump from Ungraded to Grade 8.0 is worth $209 (4.32×) — 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).