Ungraded vs Grade 8.0 Star Trek #18 (1973): price difference
Star Trek #18 (1973) value — Ungraded $11 vs Grade 8.0 $61. Grade 8.0 sells for 5.55× Ungraded (+455%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 5.55× (+455%) the Ungraded price — a $50 difference per comic.
Grade 6.0 sells for 3.09× (+209%) the Ungraded price — a $23 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Star Trek #18 (1973), the jump from Ungraded to Grade 8.0 is worth $50 (5.55×) — 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).