Detective Comics #399 (1970) — Comic Book Value
Detective ComicsWhat Detective Comics #399 (1970) is worth — ungraded and CGC graded (6.0, 8.0).
Detective Comics #399 (1970) value — Ungraded $20 · Grade 6.0 $70 · Grade 8.0 $147. Prices updated July 2026.
Series · Detective Comics
Live on eBay now
Value by grade
$20
Ungraded
3.5×
$70
Grade 6.0
7.3×
$147
Grade 8.0
Real sold prices per grade — the Grade 8.0 premium on this card is 7.3× raw.
Live on eBay right now
JunkPal AI· resale insightanalyzing sold comps…
▍
Price data verified against · 1
Item details
- Series
- Detective Comics
Detective Comics #399 (1970) comic value
An ungraded copy of Detective Comics #399 (1970) averages around $20. A CGC 6.0 runs about $70, and a CGC 8.0 commands $147.
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 | $20 | eBay sold comps |
| Grade 6.0 | $70 | eBay sold comps |
| Grade 8.0 | $147 | eBay sold comps |
Frequently asked questions
- What is the starting price for Detective Comics #399?
- An ungraded copy of Detective Comics #399 is listed with a starting value of $23.
- How much more is a Grade 8.0 compared to an ungraded copy?
- A Grade 8.0 copy sells for $147, significantly higher than the $23 price point for an ungraded copy.
- What is the price for a Grade 6.0 copy?
- Detective Comics #399 in Grade 6.0 is valued at $76.