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Detective Comics #400
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Detective Comics #400
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Detective Comics #400
CGC Grade 9.0
CGC Grade 9.0
Past data shows a 6.6% annual growth rate over 22 years. Prices tend to move together over time based on the Strong correlation.
| Fair Value | Market Value | CAGR |
|---|---|---|
| 951 | 1300 | 9.5% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 6.6% | 22 | Strong |
| 1 Year Avg (7 sold) |
90 Day Avg (2 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| 945 | 996 | 910 |
| Last Sale (Nov 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 910 | 230 | 37 |
| All Time Low (2003) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| 127 | 1380 | 31.1% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 325.8% | 6 | 4.3 |
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Detective Comics #400
CGC Grade 8.0
CGC Grade 8.0
Sales data shows unusual volume, with a 600.0% change in year to date sales volume compared to prior years.
| Fair Value | Market Value | CAGR |
|---|---|---|
| 575 | 825 | 7.9% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 4.9% | 14 | Moderate |
| 1 Year Avg (8 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 449 | 538 | 0 |
| Last Sale (Oct 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 575 | 223 | 24 |
| All Time Low (2011) |
All Time High (2023) |
Down ATH (%) |
|---|---|---|
| 155 | 660 | 12.9% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 600.0% | 8 | 7.0 |
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Detective Comics #400
CGC Grade 7.5
CGC Grade 7.5
Past data shows a 8.3% annual growth rate over 22 years. Prices tend to move together over time based on the Strong correlation.
| Fair Value | Market Value | CAGR |
|---|---|---|
| 437 | 527 | 11.1% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 8.3% | 22 | Strong |
| 1 Year Avg (4 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 430 | 444 | 0 |
| Last Sale (Oct 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 439 | 294 | 29 |
| All Time Low (2003) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| 42 | 550 | 20.5% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 252.0% | 4 | 3.5 |
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Detective Comics #400
CGC Grade 7.0
CGC Grade 7.0
| Fair Value | Market Value | CAGR |
|---|---|---|
| 400 | 880 | 5.1% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 2.5% | 16 | Weak |
| 1 Year Avg (5 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 387 | 0 | 0 |
| Last Sale (Sep 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 400 | 175 | 34 |
| All Time Low (2014) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 127 | 688 | 41.9% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 175.9% | 5 | 2.8 |
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Detective Comics #400
CGC Grade 6.5
CGC Grade 6.5
Sales data shows unusual volume, with a 303.4% change in year to date sales volume compared to prior years.
| Fair Value | Market Value | CAGR |
|---|---|---|
| 320 | 0 | 13.5% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 10.4% | 13 | Moderate |
| 1 Year Avg (11 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 328 | 292 | 0 |
| Last Sale (Nov 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 320 | 134 | 38 |
| All Time Low (2012) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 62 | 480 | 33.3% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 303.4% | 9 | 4.0 |
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Detective Comics #400
CGC Grade 6.0
CGC Grade 6.0
| Fair Value | Market Value | CAGR |
|---|---|---|
| 372 | 427 | 6.4% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 2.6% | 8 | None/Very Weak |
| 1 Year Avg (10 sold) |
90 Day Avg (3 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| 337 | 341 | 372 |
| Last Sale (Dec 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 372 | 92 | 33 |
| All Time Low (2017) |
All Time High (2023) |
Down ATH (%) |
|---|---|---|
| 203 | 475 | 21.7% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 247.8% | 10 | 3.5 |
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Detective Comics #400
CGC Grade 4.0
CGC Grade 4.0
| Fair Value | Market Value | CAGR |
|---|---|---|
| 245 | 0 | -3.7% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -9.0% | 3 | None/Very Weak |
| 1 Year Avg (5 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 224 | 230 | 0 |
| Last Sale (Nov 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 245 | 127 | 10 |
| All Time Low (2025) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| 144 | 300 | 18.3% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 200.0% | 5 | 3.0 |
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Detective Comics #400
CGC Grade 3.5
CGC Grade 3.5
| Fair Value | Market Value | CAGR |
|---|---|---|
| 175 | 0 | 0.6% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -5.0% | 3 | None/Very Weak |
| 1 Year Avg (1 sold) |
90 Day Avg (1 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 175 | 175 | 0 |
| Last Sale (Oct 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 175 | 95 | 12 |
| All Time Low (2024) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| 134 | 250 | 30.0% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -72.7% | 1 | 0.3 |
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Detective Comics #400
CGC Grade 3.0
CGC Grade 3.0
| Fair Value | Market Value | CAGR |
|---|---|---|
| 150 | 200 | -20.1% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -23.8% | 2 | None/Very Weak |
| 1 Year Avg (2 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 150 | 0 | 0 |
| Last Sale (Jul 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 130 | 230 | 5 |
| All Time Low (2024) |
All Time High (2023) |
Down ATH (%) |
|---|---|---|
| 128 | 245 | 38.8% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 33.3% | 2 | 1.3 |
Loading sales chart & history...
Detective Comics #400
CGC Grade 2.5
CGC Grade 2.5
| Fair Value | Market Value | CAGR |
|---|---|---|
| 97 | 0 | 5.6% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 0.7% | 2 | None/Very Weak |
| 1 Year Avg (2 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 97 | 0 | 0 |
| Last Sale (Aug 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 78 | 127 | 7 |
| All Time Low (2023) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| 75 | 130 | 25.4% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -20.0% | 2 | 0.8 |
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Detective Comics #400
CGC Grade 2.0
CGC Grade 2.0
| Fair Value | Market Value | CAGR |
|---|---|---|
| 100 | 0 | -20.1% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -24.5% | 3 | None/Very Weak |
| 1 Year Avg (1 sold) |
90 Day Avg (1 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| 100 | 100 | 100 |
| Last Sale (Nov 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 100 | 358 | 4 |
| All Time Low (2025) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 100 | 196 | 49.0% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 0.0% | 1 | 1.0 |
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Quick Insights on Detective Comics #400 in 2025
When was the last recorded sale for Detective Comics #400?
The last recorded sale was a CGC 6.0 for $372 on 12/03/2025 at eBay.
What was the highest sale recorded for Detective Comics #400?
The highest recorded sale was a CGC 9.8 for $43,200 on 09/12/2021 at Heritage Auctions [1].
What was the lowest sale recorded for Detective Comics #400?
The lowest recorded sale was a CGC 5.5 for $42 on 05/24/2009 at Heritage Auctions [1].
Which grade has the best annual growth for Detective Comics #400?
A CGC 6.5 shows the highest inflation-adjusted CAGR at 10.4% over 2012–2025 (13 years).
How often does Detective Comics #400 sell?
Average days to sell vary by grade (~every 92–1489 days by grade), ranging from CGC 6.0 every 92 days to CGC 9.8 every 1489 days.
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Frequently Asked Questions
What is Underval?
Underval is a free comic-book analytics and listings platform. We estimate fair value by grade, display annual growth rate, show recent sales and sales history, and surface active listings.
Where do your sales come from?
We aggregate public online sales from major marketplaces and auctions such as eBay and Heritage Auctions, then normalize and de-duplicate them by issue and grade.
How do you calculate “Estimated Worth (Fair Value)?”
Fair value blends recent realized sales with longer-term trends, outlier filtering, and grade-level liquidity. It’s an informational estimate, not an offer.
How often are values updated?
Values update as new sales appear. Each grade’s “Updated on” date reflects the most recent sale we’ve matched for that grade.
Which grades do you cover?
We track Universal CGC-graded copies across common scale points (e.g., 0.5–10). Availability varies by issue and observed market activity.
Do you offer investment advice?
No. Underval provides data and estimates for research purposes only. Always do your own diligence before buying or selling.
1 searches
Last searched: 2025-10-31
Price guide FAQ
Fair Value by CGC Grade — Detective Comics #400
What is Detective Comics #400 CGC 9.8 worth in 2025?
Estimated worth (Fair Value) is $43200
based on 4 sales over ~12 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 9.8 value, CGC 9.8 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 9.6 worth in 2025?
Estimated worth (Fair Value) is $4080
based on 6 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 9.6 value, CGC 9.6 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 9.4 worth in 2025?
Estimated worth (Fair Value) is $1960
based on 14 sales over ~18 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 9.4 value, CGC 9.4 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 9.2 worth in 2025?
Estimated worth (Fair Value) is $1600
based on 23 sales over ~20 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 9.2 value, CGC 9.2 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 9.0 worth in 2025?
Estimated worth (Fair Value) is $951
based on 37 sales over ~22 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 9.0 value, CGC 9.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 8.5 worth in 2025?
Estimated worth (Fair Value) is $492
based on 18 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 8.5 value, CGC 8.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 8.0 worth in 2025?
Estimated worth (Fair Value) is $575
based on 24 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 8.0 value, CGC 8.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 7.5 worth in 2025?
Estimated worth (Fair Value) is $437
based on 29 sales over ~22 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 7.5 value, CGC 7.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 7.0 worth in 2025?
Estimated worth (Fair Value) is $400
based on 34 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 7.0 value, CGC 7.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 6.5 worth in 2025?
Estimated worth (Fair Value) is $320
based on 38 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 6.5 value, CGC 6.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 6.0 worth in 2025?
Estimated worth (Fair Value) is $372
based on 33 sales over ~8 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 6.0 value, CGC 6.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 5.5 worth in 2025?
Estimated worth (Fair Value) is $200
based on 19 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 5.5 value, CGC 5.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 5.0 worth in 2025?
Estimated worth (Fair Value) is $225
based on 17 sales over ~12 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 5.0 value, CGC 5.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 4.5 worth in 2025?
Estimated worth (Fair Value) is $262
based on 9 sales over ~8 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 4.5 value, CGC 4.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 4.0 worth in 2025?
Estimated worth (Fair Value) is $245
based on 10 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 4.0 value, CGC 4.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 3.5 worth in 2025?
Estimated worth (Fair Value) is $175
based on 12 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 3.5 value, CGC 3.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 3.0 worth in 2025?
Estimated worth (Fair Value) is $150
based on 5 sales over ~2 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 3.0 value, CGC 3.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 2.5 worth in 2025?
Estimated worth (Fair Value) is $97
based on 7 sales over ~2 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 2.5 value, CGC 2.5 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 2.0 worth in 2025?
Estimated worth (Fair Value) is $100
based on 4 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 2.0 value, CGC 2.0 price, Detective Comics #400 worth.
What is Detective Comics #400 CGC 1.0 worth in 2025?
Estimated worth (Fair Value) is $155
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #400 CGC 1.0 value, CGC 1.0 price, Detective Comics #400 worth.
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