We know Guillermo Del Toro is working on a Justice League Dark movie. That series began with the New 52, teaming John Constantine up with the likes of Deadman and Zatana against, you know, stuff. A supernatural entity doing deep and dark things in the DC Universe for good.
Now the Constantine TV series has seen his first appearance rise into the six hundreds with a good CGC grade.
Anyway, the announcement of the project has seen the New 52 Justice League Dark #1 published a couple of years ago sell for up to $15, raw.
But that's not enough for some folks. The "real" first appearance of Justice League Dark is being credited to some as Swamp Thing #49 and #50 by Alan Moore, Steve Bissette and Rick Veitch. Issue #50 has sold raw for $47 on eBay, and #49 for $20. All because some of those folk appear together fighting against the End Times.
But they are not the only books to be so affected. Hawkman #4 featuring the first appearance of Zatanna is now a $100 book, raw. Strange Adventures #205 with the first Deadman is now a $250 book, Showcase #60 with the first Spectre is now $120, Doorway To Nightmare with the first Madame Xanadu at $31, and Demon #1 for around $55.
And a good CGC grade can double or triple those prices or more, with Swamp Thing #49 hitting $179 in 9.8…
And while these will no doubt be on the up-and-up, if you are looking for other Justice League Dark precedents to Swamp Thing, have you considered the prestige format version of Neil Gaiman's Books Of Magic? Issue 1 selling on eBay for just over a dollar?
Might be worth a cheeky purchase.
That's what I'd be looking at…