Storyline
It's always awkward to have relatives crash at your place, especially when they're knocking down the walls! First appearance and origin of Professor X's stepbrother, the Juggernaut!
It's always awkward to have relatives crash at your place, especially when they're knocking down the walls! First appearance and origin of Professor X's stepbrother, the Juggernaut!
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Past data shows a 7.5% annual growth rate over 24 years. Prices tend to move together over time based on the Strong correlation.
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 2528 | 4850 | 10.2% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 7.5% | 24 | Strong |
| 1 Year Avg (3 sold) |
90 Day Avg (1 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 2480 | 2600 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 2600 | 110 | 78 |
| All Time Low (2002) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 253 | 5500 | 54.0% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 0.0% | 1 | 1.0 |
Loading sales chart & history...
Past data shows a 7.9% annual growth rate over 21 years. Prices tend to move together over time based on the Strong correlation.
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 2206 | 3475 | 10.6% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 7.9% | 21 | Strong |
| 1 Year Avg (3 sold) |
90 Day Avg (1 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 2277 | 2100 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 2100 | 79 | 97 |
| All Time Low (2005) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 253 | 4212 | 47.6% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -42.3% | 1 | 0.6 |
Loading sales chart & history...
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 1506 | 2014 | 8.9% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 6.2% | 22 | Moderate |
| 1 Year Avg (6 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 1617 | 1340 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 1180 | 69 | 115 |
| All Time Low (2008) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 179 | 5000 | 69.9% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 35.7% | 2 | 1.4 |
Loading sales chart & history...
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| Fair Value | Market Ask | CAGR |
|---|---|---|
| 914 | 1100 | 10.0% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 7.2% | 13 | Moderate |
| 1 Year Avg (18 sold) |
90 Day Avg (6 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| 859 | 863 | 1230 |
| Last Sale (Mar 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 1230 | 34 | 140 |
| All Time Low (2014) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 135 | 2212 | 58.7% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 127.6% | 6 | 2.3 |
Loading sales chart & history...
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 692 | 950 | 11.5% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 8.7% | 15 | Weak |
| 1 Year Avg (5 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 677 | 712 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 799 | 38 | 145 |
| All Time Low (2011) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 140 | 1999 | 65.4% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -51.1% | 2 | 0.5 |
Loading sales chart & history...
🔄 Updated daily - new comics added every 24 hours!
We may earn a small commission on purchases made through links to eBay.
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 633 | 799 | 8.7% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 5.9% | 16 | Moderate |
| 1 Year Avg (12 sold) |
90 Day Avg (2 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 636 | 626 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 700 | 37 | 161 |
| All Time Low (2012) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 105 | 1649 | 61.6% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -22.0% | 2 | 0.8 |
Loading sales chart & history...
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 495 | 844 | 8.4% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 5.7% | 14 | Weak |
| 1 Year Avg (11 sold) |
90 Day Avg (1 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 482 | 559 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 559 | 31 | 161 |
| All Time Low (2015) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 95 | 1395 | 64.5% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -70.3% | 1 | 0.3 |
Loading sales chart & history...
🔄 Updated daily - new comics added every 24 hours!
We may earn a small commission on purchases made through links to eBay.
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 430 | 592 | 13.6% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 10.7% | 14 | None/Very Weak |
| 1 Year Avg (12 sold) |
90 Day Avg (3 sold) |
30 Day Avg (2 sold) |
|---|---|---|
| 433 | 421 | 432 |
| Last Sale (Mar 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 400 | 43 | 116 |
| All Time Low (2012) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 71 | 1059 | 59.4% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 18.2% | 3 | 1.2 |
Loading sales chart & history...
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 497 | 1150 | 11.8% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 9.1% | 21 | Weak |
| 1 Year Avg (9 sold) |
90 Day Avg (2 sold) |
30 Day Avg (2 sold) |
|---|---|---|
| 451 | 535 | 535 |
| Last Sale (Mar 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 570 | 87 | 87 |
| All Time Low (2005) |
All Time High (2022) |
Down ATH (%) |
|---|---|---|
| 51 | 1000 | 50.3% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 18.2% | 2 | 1.2 |
Loading sales chart & history...
| Fair Value | Market Ask | CAGR |
|---|---|---|
| 326 | 0 | 11.9% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 8.7% | 11 | Weak |
| 1 Year Avg (7 sold) |
90 Day Avg (1 sold) |
30 Day Avg (1 sold) |
|---|---|---|
| 312 | 345 | 345 |
| Last Sale (Mar 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 345 | 87 | 47 |
| All Time Low (2015) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 100 | 798 | 59.1% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| 0.0% | 1 | 1.0 |
Loading sales chart & history...
🔄 Updated daily - new comics added every 24 hours!
We may earn a small commission on purchases made through links to eBay.
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| Fair Value | Market Ask | CAGR |
|---|---|---|
| 328 | 556 | 13.9% |
| CAGR (Inflation Adj) |
Years Tracked | Correlation |
|---|---|---|
| 10.8% | 12 | Moderate |
| 1 Year Avg (4 sold) |
90 Day Avg (1 sold) |
30 Day Avg (0 sold) |
|---|---|---|
| 330 | 325 | 0 |
| Last Sale (Feb 2026) |
Avg Days To Sale | Sales Tracked |
|---|---|---|
| 325 | 121 | 36 |
| All Time Low (2014) |
All Time High (2021) |
Down ATH (%) |
|---|---|---|
| 56 | 690 | 52.5% |
| Issue Volume (% YTD) |
Issue Volume (YTD) |
Relative Volume (YTD) |
|---|---|---|
| -11.1% | 1 | 0.9 |
Loading sales chart & history...
X-Men #12 is a perfect example of why comic buying decisions feel harder than they should.
Some grades quietly compound while others stall. Price can look reasonable and still be misleading. And what feels “stable” on a price guide often hides risk that only shows up later.
I struggled with this for years — even on iconic books like this one.
The issue wasn’t access to more data. It was misreading the signals that actually matter when deciding if — and how — to buy.
I documented the framework I now use to make these calls — the same thinking behind Underval’s fair-value logic.
How to stop misreading the comic market before it costs you.
The last recorded sale was a CGC 6.0 for $1,230 on 03/23/2026 at eBay.
The highest recorded sale was a CGC 9.8 for $43,700 on 09/13/2019 at Comic Connect.
The lowest recorded sale was a CGC 0.5 for $39 on 04/10/2016 at eBay.
A CGC 9.8 shows the highest inflation-adjusted CAGR at 16.9% over 2010–2019 (9 years).
Average days to sell vary by grade (~every 31–1610 days by grade), ranging from CGC 4.0 every 31 days to CGC 9.8 every 1610 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 X-Men #12 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.
Estimated worth (Fair Value) is $43700
based on 3 sales over ~9 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 9.8 value, CGC 9.8 price, X-Men #12 worth.
Estimated worth (Fair Value) is $24000
based on 7 sales over ~12 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 9.6 value, CGC 9.6 price, X-Men #12 worth.
Estimated worth (Fair Value) is $11550
based on 27 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 9.4 value, CGC 9.4 price, X-Men #12 worth.
Estimated worth (Fair Value) is $8000
based on 21 sales over ~24 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 9.2 value, CGC 9.2 price, X-Men #12 worth.
Estimated worth (Fair Value) is $3850
based on 51 sales over ~23 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 9.0 value, CGC 9.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $2528
based on 78 sales over ~24 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 8.5 value, CGC 8.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $2206
based on 97 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 8.0 value, CGC 8.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $1506
based on 115 sales over ~22 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 7.5 value, CGC 7.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $1306
based on 130 sales over ~20 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 7.0 value, CGC 7.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $1034
based on 129 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 6.5 value, CGC 6.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $914
based on 140 sales over ~13 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 6.0 value, CGC 6.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $692
based on 145 sales over ~15 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 5.5 value, CGC 5.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $633
based on 161 sales over ~16 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 5.0 value, CGC 5.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $565
based on 127 sales over ~17 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 4.5 value, CGC 4.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $495
based on 161 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 4.0 value, CGC 4.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $430
based on 116 sales over ~14 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 3.5 value, CGC 3.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $497
based on 87 sales over ~21 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 3.0 value, CGC 3.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $326
based on 47 sales over ~11 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 2.5 value, CGC 2.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $328
based on 36 sales over ~12 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 2.0 value, CGC 2.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $310
based on 11 sales over ~6 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 1.8 value, CGC 1.8 price, X-Men #12 worth.
Estimated worth (Fair Value) is $349
based on 9 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 1.5 value, CGC 1.5 price, X-Men #12 worth.
Estimated worth (Fair Value) is $340
based on 3 sales over ~4 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 1.0 value, CGC 1.0 price, X-Men #12 worth.
Estimated worth (Fair Value) is $232
based on 23 sales over ~11 years
.
Informational estimate, not an offer.
Updated on
based on the last sale.
Also searched as: X-Men #12 CGC 0.5 value, CGC 0.5 price, X-Men #12 worth.
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