Storyline
Spider-Man...spider-sized! Ben Reilly wakes up to find himself shrunk down in a child's bedroom, and everything else is not only giant...but wants him dead!
Spider-Man...spider-sized! Ben Reilly wakes up to find himself shrunk down in a child's bedroom, and everything else is not only giant...but wants him dead!
Sign up free to see estimated worth (fair value), annual growth, last sale, time-based trends, and liquidity for all grades.
The last recorded sale was a CGC 9.6 for $100 on 12/13/2025 at eBay.
The highest recorded sale was a CGC 9.8 for $103 on 09/26/2022 at eBay.
The lowest recorded sale was a CGC 9.4 for $5 on 03/02/2015 at eBay.
A CGC 9.4 shows the highest inflation-adjusted CAGR at 26.0% over 2015–2020 (5 years).
Average days to sell vary by grade (~every 416–632 days by grade), ranging from CGC 9.4 every 416 days to CGC 9.6 every 632 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, Compound Annual Growth Rate (CAGR), and time-based average sale prices by issue and grade.
Quickly find comics like Amazing Spider-Man #413 priced below fair value across the web through auction sites like eBay, based on recent market data.
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.