Swamp Thing #21 (1976) — Comic Book Value
Swamp ThingWhat Swamp Thing #21 (1976) is worth — ungraded and CGC graded (6.0, 8.0).
Swamp Thing #21 (1976) value — Ungraded $8 · Grade 6.0 $21 · Grade 8.0 $37. Prices updated August 2026.
Real sold prices per grade — the Grade 8.0 premium on this card is 4.6× raw.
Live on eBay right now
Which version do you have?
To simply own Swamp Thing #21 (2006), purchase any Standard version for around $6-$7. The listed versions are identical in terms of edition and packaging, so there is no premium benefit to paying more. Buyers prioritizing budget should select the lowest priced Standard copy. Those willing to spend the extra dollar for a slightly different listing are paying for negligible variation, not true scarcity or edition upgrades.
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Item details
- Series
- Swamp Thing
Swamp Thing #21 (1976) comic value
An ungraded copy of Swamp Thing #21 (1976) averages around $8. A CGC 6.0 runs about $21, and a CGC 8.0 commands $37.
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 | $8 | eBay sold comps |
| Grade 6.0 | $21 | eBay sold comps |
| Grade 8.0 | $37 | eBay sold comps |
Frequently asked questions
- What is the starting price for Swamp Thing #21?
- Ungraded copies of Swamp Thing #21 are available on the marketplace.
- How much is a Grade 8.0 copy of this issue?
- A Grade 8.0 copy of Swamp Thing #21 is currently listed for $40.
- Is the condition of the comic a major factor in its resale value?
- Yes, the condition significantly impacts value; a Grade 6.0 sells for $23 compared to ungraded copies.