The Diamond Comics Advance Reorder List is a great speculator tool. It shows what books retailers are going back to get more of, in advance of their release. They are actually putting their money up betting these books get big. These are the books people are talking about in shops, message boards, and websites. Here is the Diamond Comics Advance for 12/20/15:
Another interesting week. As the year winds down we still see a lot of Star Wars across the list. Walking Dead 150 variants represented as well. Invader Zim finally catching hold and taking the number one spot. As for 2nd prints, all the Justice League Darkseid Wars are going back for additional printings.
INVADER ZIM #6 INCV VAR
DAREDEVIL #3
WALKING DEAD #150 CVR D MOORE
DARTH VADER #15
SILK #3
POISON IVY CYCLE OF LIFE AND DEATH #1
JUSTICE LEAGUE DARKSEID WAR BATMAN #1 2ND PTG
MIGHTY THOR #3
JUSTICE LEAGUE DARKSEID WAR SUPERMAN #1 2ND PTG
JUSTICE LEAGUE DARKSEID WAR FLASH #1 2ND PTG
JUSTICE LEAGUE #48
JUSTICE LEAGUE DARKSEID WAR SHAZAM #1 2ND PTG
ALL NEW WOLVERINE #4
WALKING DEAD #150 CVR E OTTLEY
WALKING DEAD #150 CVR C LATOUR
JUSTICE LEAGUE DARKSEID WAR GREEN LANTERN #1 2ND PTG
DARTH VADER #15 FRANCAVILLA VAR
SILVER SURFER #1
EXTRAORDINARY X-MEN #5
TOTALLY AWESOME HULK #1 FRANK CHO 2ND PTG VAR
BITCH PLANET #6
X-MEN TP AGE OF APOCALYPSE DAWN
DEADPOOL FIRSTS TP
MOON GIRL AND DEVIL DINOSAUR #1 REEDER 2ND PTG VAR
PAPER GIRLS #4