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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 $22705
based on 3 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 9.8 value,
CGC 9.8 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 9.6 worth in 2026?
Estimated worth (Fair Value) is $13200
based on 8 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 9.6 value,
CGC 9.6 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 9.4 worth in 2026?
Estimated worth (Fair Value) is $10200
based on 12 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 9.4 value,
CGC 9.4 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 9.2 worth in 2026?
Estimated worth (Fair Value) is $5000
based on 8 sales over ~22 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 9.2 value,
CGC 9.2 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 9.0 worth in 2026?
Estimated worth (Fair Value) is $1860
based on 14 sales over ~17 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 9.0 value,
CGC 9.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 8.5 worth in 2026?
Estimated worth (Fair Value) is $1820
based on 23 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 8.5 value,
CGC 8.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 8.0 worth in 2026?
Estimated worth (Fair Value) is $1723
based on 17 sales over ~20 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 8.0 value,
CGC 8.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 7.5 worth in 2026?
Estimated worth (Fair Value) is $910
based on 34 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 7.5 value,
CGC 7.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 7.0 worth in 2026?
Estimated worth (Fair Value) is $735
based on 42 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 7.0 value,
CGC 7.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 6.5 worth in 2026?
Estimated worth (Fair Value) is $672
based on 44 sales over ~24 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 6.5 value,
CGC 6.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 6.0 worth in 2026?
Estimated worth (Fair Value) is $957
based on 47 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 6.0 value,
CGC 6.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 5.5 worth in 2026?
Estimated worth (Fair Value) is $452
based on 35 sales over ~24 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 5.5 value,
CGC 5.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 5.0 worth in 2026?
Estimated worth (Fair Value) is $371
based on 58 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 5.0 value,
CGC 5.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 4.5 worth in 2026?
Estimated worth (Fair Value) is $356
based on 61 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 4.5 value,
CGC 4.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 4.0 worth in 2026?
Estimated worth (Fair Value) is $337
based on 71 sales over ~22 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 4.0 value,
CGC 4.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 3.5 worth in 2026?
Estimated worth (Fair Value) is $289
based on 69 sales over ~17 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 3.5 value,
CGC 3.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 3.0 worth in 2026?
Estimated worth (Fair Value) is $261
based on 53 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 3.0 value,
CGC 3.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 2.5 worth in 2026?
Estimated worth (Fair Value) is $166
based on 32 sales over ~17 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 2.5 value,
CGC 2.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 2.0 worth in 2026?
Estimated worth (Fair Value) is $124
based on 13 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 2.0 value,
CGC 2.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 1.8 worth in 2026?
Estimated worth (Fair Value) is $175
based on 7 sales over ~5 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 1.8 value,
CGC 1.8 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 1.5 worth in 2026?
Estimated worth (Fair Value) is $300
based on 5 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 1.5 value,
CGC 1.5 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 1.0 worth in 2026?
Estimated worth (Fair Value) is $186
based on 5 sales over ~3 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 1.0 value,
CGC 1.0 price, Fantastic Four #10 worth.
What is Fantastic Four #10 CGC 0.5 worth in 2026?
Estimated worth (Fair Value) is $200
based on 3 sales over ~11 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: Fantastic Four #10 CGC 0.5 value,
CGC 0.5 price, Fantastic Four #10 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.