| Fair Value | Market Ask | Growth |
|---|---|---|
| $2,400 | — | 3.3% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 2.0% | 1 | Strong |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Aug 2020) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $595 | 276 | 2 |
| All Time Low (2019) |
All Time High (2020) |
Down ATH (%) |
|---|---|---|
| $576 | $595 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | NA |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 9.2.
Sign Up FreeSee active listings for Detective Comics #311 CGC 9.2 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $303 | $625 | -6.4% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -9.7% | 7 | None/Very Weak |
| 1 Year Avg (1 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| $303 | — | — |
| Last Sale (Nov 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $303 | 901 | 4 |
| All Time Low (2025) |
All Time High (2018) |
Down ATH (%) |
|---|---|---|
| $240 | $432 | 29.9% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 8.0.
Sign Up FreeSee active listings for Detective Comics #311 CGC 8.0 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $300 | $650 | 2.3% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -1.4% | 7 | Moderate |
| 1 Year Avg (1 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| $300 | — | — |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $300 | 1262 | 3 |
| All Time Low (2023) |
All Time High (2026) |
Down ATH (%) |
|---|---|---|
| $240 | $300 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 250.0% | 1 | 3.5 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 7.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 7.5 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $329 | $375 | 20.4% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 15.6% | 5 | Strong |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Oct 2024) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $329 | 375 | 6 |
| All Time Low (2019) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| $130 | $329 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 6.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 6.5 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $305 | $400 | 2.6% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -0.4% | 4 | None/Very Weak |
| 1 Year Avg (2 sold) |
90 Day Avg (1 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| $186 | $305 | $305 |
| Last Sale (Jun 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $305 | 257 | 6 |
| All Time Low (2025) |
All Time High (2026) |
Down ATH (%) |
|---|---|---|
| $66 | $305 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 50.0% | 1 | 1.5 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 6.0.
Sign Up FreeSee active listings for Detective Comics #311 CGC 6.0 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $165 | — | -6.9% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -9.8% | 3 | None/Very Weak |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Jun 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $165 | 499 | 3 |
| All Time Low (2025) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| $165 | $240 | 31.2% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 5.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 5.5 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $185 | $2,122 | -3.7% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -6.5% | 1 | None/Very Weak |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Dec 2024) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $185 | 190 | 3 |
| All Time Low (2024) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| $185 | $200 | 7.5% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 4.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 4.5 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $100 | — | 0.0% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 0.0% | 1 | None/Very Weak |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Nov 2024) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $100 | 250 | 2 |
| All Time Low (2024) |
All Time High (2024) |
Down ATH (%) |
|---|---|---|
| $91 | $100 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 3.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 3.5 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $85 | — | 0.0% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 0.0% | 1 | None/Very Weak |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Mar 2025) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $85 | NA | 1 |
| All Time Low (2025) |
All Time High (2025) |
Down ATH (%) |
|---|---|---|
| $85 | $85 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 2.0.
Sign Up FreeSee active listings for Detective Comics #311 CGC 2.0 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $100 | — | 0.0% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| -3.0% | 4 | None/Very Weak |
| 1 Year Avg (1 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| $100 | — | — |
| Last Sale (Jan 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $100 | 1153 | 2 |
| All Time Low (2026) |
All Time High (2026) |
Down ATH (%) |
|---|---|---|
| $100 | $100 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 1 | NA |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 1.8.
Sign Up FreeSee active listings for Detective Comics #311 CGC 1.8 and compare asking prices against Underval’s fair value estimate.
Sign Up Free| Fair Value | Market Ask | Growth |
|---|---|---|
| $51 | $140 | 0.0% |
| Growth (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 0.0% | 1 | None/Very Weak |
| 1 Year Avg (0 sold) |
90 Day Avg (0 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| — | — | — |
| Last Sale (Mar 2023) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| $51 | NA | 1 |
| All Time Low (2023) |
All Time High (2023) |
Down ATH (%) |
|---|---|---|
| $51 | $51 | 0.0% |
| Sales Volume (% YTD) |
Sales Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| NA | 0 | 0.0 |
See verified sales, price movement, and historical market activity for Detective Comics #311 CGC 1.5.
Sign Up FreeSee active listings for Detective Comics #311 CGC 1.5 and compare asking prices against Underval’s fair value estimate.
Sign Up FreeCreate a free Underval account to compare grades, track value changes, and find comics listed below fair value.
Compare Every CGC Grade for FreeThe last recorded sale was a CGC 6.0 for $305 on 06/18/2026 at eBay.
The highest recorded sale was a CGC 9.6 for $4,800 on 01/17/2021 at Heritage Auctions [1].
The lowest recorded sale was a CGC 1.5 for $51 on 03/19/2023 at eBay.
A CGC 6.5 shows the highest inflation-adjusted growth at 15.2% over 2019–2024 (5 years).
Average days to sell vary by grade (~every 190–5639 days by grade), ranging from CGC 4.5 every 190 days to CGC 8.5 every 5639 days.
Search by title and issue to explore market data, sales history, and real-time pricing trends for each grade.
Gain insight into key metrics such as Fair Value, CAGR, and time-based average sale prices by issue and grade.
Quickly find comics priced below fair value across the web through auction sites such as eBay, My Comic Shop, and more.
Join hundreds of collectors already using 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.
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.
Fair value blends recent realized sales with longer-term trends, outlier filtering, and grade-level liquidity. It’s an informational estimate, not an offer.
Values update as new sales appear. Each grade’s “Updated on” date reflects the most recent sale we’ve matched for that grade.
We track Universal CGC-graded copies across common scale points (e.g., 0.5–10). Availability varies by issue and observed market activity.
No. Underval provides data and estimates for research purposes only. Always do your own diligence before buying or selling.
Estimated worth (Fair Value) is $4800
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 9.6 value, CGC 9.6 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $3600
based on 5 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 9.4 value, CGC 9.4 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $2400
based on 2 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 9.2 value, CGC 9.2 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $1200
based on 3 sales over ~19 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 9.0 value, CGC 9.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $456
based on 2 sales over ~15 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 8.5 value, CGC 8.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $303
based on 4 sales over ~7 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 8.0 value, CGC 8.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $300
based on 3 sales over ~7 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 7.5 value, CGC 7.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $484
based on 3 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 7.0 value, CGC 7.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $329
based on 6 sales over ~5 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 6.5 value, CGC 6.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $305
based on 6 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 6.0 value, CGC 6.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $165
based on 3 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 5.5 value, CGC 5.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $196
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 5.0 value, CGC 5.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $185
based on 3 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 4.5 value, CGC 4.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $139
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 4.0 value, CGC 4.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $100
based on 2 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 3.5 value, CGC 3.5 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $79
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 3.0 value, CGC 3.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $85
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 2.0 value, CGC 2.0 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $100
based on 2 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 1.8 value, CGC 1.8 price, Detective Comics #311 worth.
Estimated worth (Fair Value) is $51
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Detective Comics #311 CGC 1.5 value, CGC 1.5 price, Detective Comics #311 worth.
Legal Disclaimer
Underval is a platform designed to provide information about the
potential value of comic books based on data analysis. We do not provide investment advice, and any information
provided on our platform is for informational purposes only. While we strive to offer accurate and reliable
data,
the decision to purchase any comic book should be based on your own research and judgment. Underval does not
guarantee the accuracy, completeness, or reliability of any information provided, and we shall not be held
liable
for any actions taken based on the content available on our platform. By using Underval, you acknowledge and
agree
to these terms.