The most accessible Joker key in 2026 is Batman #251 (September 1973, Denny O'Neil & Neal Adams), with an eBay median of €9 across 65 listings — though a CGC 9.8 copy realised $38,000 at ComicLink in June 2024. The ultimate grail is Batman #1 (Spring 1940, first Joker appearance): a CGC 9.4 copy sold for $2,220,000 at Heritage Auctions in January 2021.
The Joker is arguably the most film-adapted comics character after Batman himself. Jack Nicholson played him in 1989, Heath Ledger in 2008, and Joaquin Phoenix in 2019 in a film that crossed one billion dollars at the worldwide box office — the first R-rated film ever to do so. That repeated on-screen presence keeps sustained collector interest in key issues alive, but the 2019 Phoenix effect is now largely priced in: the top CGC copies of Batman #251 have appreciated roughly fifteen-fold since 2011, according to ComicLink and CGC Census data.
This guide sticks to the verifiable: eBay medians from our estimator (eBay.fr + eBay.com, June 2026) and records documented at public auction. Golden Age issues are outside our tool's coverage — only documented public records are cited for them. The eBay median for Batman #1 (€7 across 100 listings) is overwhelmingly composed of modern reprints and facsimile editions: it bears no relation to the value of the 1940 original, which is a six-figure grail.
Joker key issue ranking (real market values, June 2026)
Only Batman #251 has a reliable eBay median in our tool (65 listings, above the 15-listing threshold). The Golden Age grails — Batman #1 and Detective Comics #168 — rely exclusively on documented auction records. The A Death in the Family arc (Batman #426–429) has variable listing volumes: only #429 clears a comfortable threshold (32 listings).
| Issue | Significance | eBay data (all grades) | Documented record |
|---|---|---|---|
| Batman #1 (Spring 1940) | 1st appearance of the Joker (and Catwoman) | Median unusable — reprints dominant | $2,220,000 (CGC 9.4, Heritage Jan. 2021) |
| Detective Comics #168 (Feb. 1951) | Joker origin — the Red Hood | <15 listings — unreliable | $324,000 (CGC 9.4, Nov. 2022) |
| Batman #251 (Sep. 1973) | Joker returns as a killer — O'Neil & Adams | Median €9 · 65 listings | $38,000 (CGC 9.8, ComicLink Jun. 2024) |
| Batman: The Killing Joke (1988) | Graphic novel by Alan Moore & Brian Bolland | Not tested — separate series | CGC 9.8 range: $150–$250 (PriceCharting) |
| Batman #426 (Dec. 1988) | A Death in the Family pt. 1 — Joker kills Jason Todd | <15 listings — unreliable | Not publicly documented |
| Batman #429 (Jan. 1989) | A Death in the Family pt. 4 — conclusion | Median €28 · 32 listings | Not publicly documented |
Record sources: Heritage Auctions, CGC Comics News, ComicLink, GoCollect, PriceCharting.
Batman #1 (1940): the unreachable grail
Published in Spring 1940, Batman #1 contains the first appearance of the Joker — and also of Catwoman. The issue was written by Bill Finger with art and character design by Bob Kane and Jerry Robinson. In January 2021, Heritage Auctions sold a CGC 9.4 White Pages copy for $2,220,000, a record for the title and the second-highest price ever paid for a comic book in a public sale at the time. Scarcity is extreme: the CGC Census had recorded just 270 copies in all grades as of 2020. The eBay median returned by our tool (€7 across 100 listings) is entirely skewed by modern reprints and facsimile editions — it must never be cited as a proxy for the 1940 original.
Detective Comics #168 (1951): the birth of the Red Hood origin
Published in February 1951, Detective Comics #168 reveals the Joker's origin for the first time: a nameless criminal who fell into a chemical vat while fleeing under the Red Hood guise, permanently disfigured. This story established the founding myth that Alan Moore later revisited in The Killing Joke. With only 4 listings in our estimator, the volume is too thin to cite a reliable median. Auction records are the only benchmark: a CGC 9.4 copy sold for $324,000 in November 2022 according to GoCollect; a CGC 6.0 copy realised $23,345 in March 2022. The issue ranks in the Overstreet top 75 Golden Age comics.
Batman #251 (1973): the Bronze Age key driving today's market
This is the most actively traded Joker issue in 2026. Published in September 1973, Batman #251 features "The Joker's Five-Way Revenge!", written by Denny O'Neil with art by Neal Adams. The story is pivotal: it rehabilitates the Joker as a relentless killer after years of being reduced to a harmless prankster, and the Neal Adams cover — the Joker's face in close-up, eyes vacant — is one of the most reproduced images in the medium's history. Our estimator returns a median of €9 across 65 listings (eBay.fr + eBay.com, June 2026): that is the entry-level market, accessible at most grades. The high-grade tier operates on an entirely different scale: a CGC 9.8 — one of only 30 copies at that grade among 4,261 total CGC-graded examples — realised $38,000 at ComicLink in June 2024, up from a 2022 record of $35,000 and just $2,520 back in 2011. That trajectory captures both the post-2019 film surge and the structural scarcity of near-mint Bronze Age copies.
The Joaquin Phoenix effect: a boom now priced in, a sequel that flopped
The 2019 film Joker (directed by Todd Phillips, starring Joaquin Phoenix) grossed over one billion dollars worldwide — the first R-rated film to achieve that milestone. Its release drove strong demand for Joker key issues, particularly Batman #251, whose high-grade CGC prices surged in the years that followed. The 2024 sequel Joker: Folie à Deux reversed that dynamic entirely: the film grossed just $207.5 million worldwide against a reported production budget of $190–200 million, with Deadline estimating losses above $144 million for Warner Bros. No comparable upward pressure on comics prices was observed around the sequel's release. A blockbuster can catalyse a key-issue market, but the effect is temporary — what drives long-term value is grade, census position, and the fundamental rarity of the issue.
The Killing Joke and A Death in the Family
Batman: The Killing Joke (1988), the graphic novel by Alan Moore and Brian Bolland, is the most influential Joker story since Batman #251: it cements the Red Hood origin, paralyses Barbara Gordon, and redefines the Batman–Joker dynamic. Published in prestige format, it sits outside the numbered Batman series and is not covered by our eBay estimator. CGC 9.8 copies trade in a $150–$250 range according to PriceCharting, with 14 copies graded at the maximum CGC 10.0 in the Census. That same year, Batman #426–429 ("A Death in the Family") featured the Joker killing Jason Todd in a telephone-vote storyline. Of the four issues in the arc, only Batman #429 (conclusion, 32 listings) clears our reliability threshold, with a median of €28 in our tool.
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