Detective Comics #400 (1970) — Comic Book Value
Detective ComicsWhat Detective Comics #400 (1970) is worth — ungraded and CGC graded (6.0, 8.0).
Detective Comics #400 (1970) value — Ungraded $208 · Grade 6.0 $345 · Grade 8.0 $545. Prices updated August 2026.
Series · Detective Comics
Live on eBay now
↗ Rising · +13%
Value by grade
$208
Ungraded
+66%
$345
Grade 6.0
2.6×
$545
Grade 8.0
Real sold prices per grade — the Grade 8.0 premium on this card is 2.6× raw.
Complete-in-box price history
Monthly CIB value, based on sold comps.
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Item details
- Series
- Detective Comics
- Publisher
- DC
- Issue
- #400
- Key issue
- No
- Release date
- June 1, 1970
Detective Comics #400 (1970) comic value
An ungraded copy of Detective Comics #400 (1970) averages around $208. A CGC 6.0 runs about $345, and a CGC 8.0 commands $545.
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 | $208 | eBay sold comps |
| Grade 6.0 | $345 | eBay sold comps |
| Grade 8.0 | $545 | eBay sold comps |
Frequently asked questions
- What is the starting price for Detective Comics #400?
- The ungraded copy of Detective Comics #400 is currently listed for $138.
- How much is a high-grade copy of this issue?
- A Grade 8.0 copy of Detective Comics #400 is available for $478.
- What is the price difference between ungraded and a Grade 6.0?
- The ungraded version is $138, while the Grade 6.0 copy is priced at $345.