Storyline
"This man...this monster!" You can't call yourself a fan of Ben Grimm, the ever-lovin' blue-eyed Thing, if you haven't read this issue. 40 years later and it's still one of the greatest Thing stories ever created.
Fantastic Four #51
Fantastic Four #51 worth by CGC grade ranges from $49 to $3,240.
Fantastic Four #51
Value & Price Guide by CGC Grade
Sign up free to see estimated worth (fair value), recent sales, growth trends, and comics listed below fair value for every CGC grade.
Free • Takes 10 seconds • No credit card required
Grade
Fair Value
Compare nearby issues to spot how value and grade behavior change from issue to issue.
Browse all Fantastic Four issues.
Quick Insights on Fantastic Four #51 in 2026
When was the last recorded sale for Fantastic Four #51?
The last recorded sale was a CGC 3.0 for $70 on 05/01/2026 at eBay.
What was the highest sale recorded for Fantastic Four #51?
The highest recorded sale was a CGC 9.6 for $10,158 on 11/18/2010 at Heritage Auctions [1].
What was the lowest sale recorded for Fantastic Four #51?
The lowest recorded sale was a CGC 2.5 for $16 on 03/13/2012 at Comic Connect.
Which grade has the best annual growth for Fantastic Four #51?
A CGC 9.4 shows the highest inflation-adjusted growth at 11.9% over 2016–2025 (9 years).
How often does Fantastic Four #51 sell?
Average days to sell vary by grade (~every 102–1244 days by grade), ranging from CGC 6.0 every 102 days to CGC 2.5 every 1244 days.
Unleash the Power of Underval
Here's how it works - in just three easy steps.
1. Start by searching your favorite comic
Search by title and issue to explore market data, sales history, and real-time pricing trends for each grade.
2. Discover valuable insights
Gain insight into key metrics such as Fair Value, Compound Annual Growth Rate (CAGR), and time-based average sale prices by issue and grade.
3. Find comics listed below fair value
Quickly find comics like Fantastic Four #51 priced below fair value across the web through auction sites like eBay, based on recent market data.
Sign Up Free
Join hundreds of collectors already using Underval!
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.