Swamp Thing #90 (1989) — Comic Book Value
Swamp ThingWhat Swamp Thing #90 (1989) is worth — ungraded and CGC graded (6.0, 8.0).
Swamp Thing #90 (1989) value — Ungraded $14 · Grade 6.0 $27 · Grade 8.0 $80. Prices updated August 2026.
Series · Swamp Thing
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Value by grade
$14
Ungraded
+93%
$27
Grade 6.0
5.7×
$80
Grade 8.0
Real sold prices per grade — the Grade 8.0 premium on this card is 5.7× raw.
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Item details
- Series
- Swamp Thing
Swamp Thing #90 (1989) comic value
An ungraded copy of Swamp Thing #90 (1989) averages around $14. A CGC 6.0 runs about $27, and a CGC 8.0 commands $80.
What drives the price
Grade is everything in comics — spine ticks, page color, and restoration decide the number, and the jump from raw to high grade can be 10×+. Key issues (first appearances, origins, deaths) carry the biggest premiums, and early printings beat reprints.
Price guide
Sold values by grade vs. what sellers ask today
| Condition | Value | Based on |
|---|---|---|
| Ungraded | $14 | eBay sold comps |
| Grade 6.0 | $27 | eBay sold comps |
| Grade 8.0 | $80 | eBay sold comps |
Frequently asked questions
- What is the starting price for Swamp Thing #90?
- The ungraded version of Swamp Thing #90 is listed starting at $13.
- How much is a high-grade copy of this comic?
- A Grade 8.0 copy of Swamp Thing #90 is valued at $80.
- Is the condition of this comic important for its resale value?
- Yes, the condition heavily impacts price; a Grade 6.0 copy is priced at $18.