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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.
Estimated worth (Fair Value) is $19200
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 9.4 value,
CGC 9.4 price, Batman #13 worth.
What is Batman #13 CGC 9.2 worth in 2025?
Estimated worth (Fair Value) is $14831
based on 3 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 9.2 value,
CGC 9.2 price, Batman #13 worth.
What is Batman #13 CGC 9.0 worth in 2025?
Estimated worth (Fair Value) is $10462
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 9.0 value,
CGC 9.0 price, Batman #13 worth.
What is Batman #13 CGC 8.5 worth in 2025?
Estimated worth (Fair Value) is $6900
based on 11 sales over ~19 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 8.5 value,
CGC 8.5 price, Batman #13 worth.
What is Batman #13 CGC 8.0 worth in 2025?
Estimated worth (Fair Value) is $7650
based on 4 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 8.0 value,
CGC 8.0 price, Batman #13 worth.
What is Batman #13 CGC 7.5 worth in 2025?
Estimated worth (Fair Value) is $8400
based on 11 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 7.5 value,
CGC 7.5 price, Batman #13 worth.
What is Batman #13 CGC 7.0 worth in 2025?
Estimated worth (Fair Value) is $3457
based on 8 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 7.0 value,
CGC 7.0 price, Batman #13 worth.
What is Batman #13 CGC 6.5 worth in 2025?
Estimated worth (Fair Value) is $3480
based on 11 sales over ~11 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 6.5 value,
CGC 6.5 price, Batman #13 worth.
What is Batman #13 CGC 6.0 worth in 2025?
Estimated worth (Fair Value) is $2150
based on 9 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 6.0 value,
CGC 6.0 price, Batman #13 worth.
What is Batman #13 CGC 5.5 worth in 2025?
Estimated worth (Fair Value) is $2750
based on 9 sales over ~15 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 5.5 value,
CGC 5.5 price, Batman #13 worth.
What is Batman #13 CGC 5.0 worth in 2025?
Estimated worth (Fair Value) is $2000
based on 16 sales over ~20 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 5.0 value,
CGC 5.0 price, Batman #13 worth.
What is Batman #13 CGC 4.5 worth in 2025?
Estimated worth (Fair Value) is $1260
based on 11 sales over ~20 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 4.5 value,
CGC 4.5 price, Batman #13 worth.
What is Batman #13 CGC 4.0 worth in 2025?
Estimated worth (Fair Value) is $1920
based on 13 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 4.0 value,
CGC 4.0 price, Batman #13 worth.
What is Batman #13 CGC 3.5 worth in 2025?
Estimated worth (Fair Value) is $990
based on 8 sales over ~17 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 3.5 value,
CGC 3.5 price, Batman #13 worth.
What is Batman #13 CGC 3.0 worth in 2025?
Estimated worth (Fair Value) is $1097
based on 11 sales over ~15 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 3.0 value,
CGC 3.0 price, Batman #13 worth.
What is Batman #13 CGC 2.5 worth in 2025?
Estimated worth (Fair Value) is $924
based on 10 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 2.5 value,
CGC 2.5 price, Batman #13 worth.
What is Batman #13 CGC 2.0 worth in 2025?
Estimated worth (Fair Value) is $750
based on 2 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 2.0 value,
CGC 2.0 price, Batman #13 worth.
What is Batman #13 CGC 1.8 worth in 2025?
Estimated worth (Fair Value) is $770
based on 1 sales over ~1 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 1.8 value,
CGC 1.8 price, Batman #13 worth.
What is Batman #13 CGC 1.5 worth in 2025?
Estimated worth (Fair Value) is $420
based on 7 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 1.5 value,
CGC 1.5 price, Batman #13 worth.
What is Batman #13 CGC 1.0 worth in 2025?
Estimated worth (Fair Value) is $785
based on 3 sales over ~5 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 1.0 value,
CGC 1.0 price, Batman #13 worth.
What is Batman #13 CGC 0.5 worth in 2025?
Estimated worth (Fair Value) is $435
based on 2 sales over ~5 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Batman #13 CGC 0.5 value,
CGC 0.5 price, Batman #13 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.