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 Reorder List for 3/7/19:
INCREDIBLE HULK #181 FACSIMILE EDITION
JUSTICE LEAGUE #20 LEFT VAR ED
SPIDER-MAN CITY AT WAR #1
SPIDER-MAN LIFE STORY #1
IMMORTAL HULK #15
BRONZE AGE BOOGIE #1
ONCE AND FUTURE #1
VENOM #12 STEGMAN SPIDER-MAN VILLAINS VAR
IMMORTAL HULK #15 ALEX ROSS MARVELS 25TH TRIBUTE VAR
GUARDIANS OF THE GALAXY #3
FIREFLY BAD COMPANY #1
VENOM #12
BATMAN #67 VAR ED
SPIDER-MAN LIFE STORY #1 YOUNG VAR
SHAZAM #4 VAR ED
WOLVERINE INFINITY WATCH #2
CONAN THE BARBARIAN #1 3RD PTG ASRAR VAR
THOR #11 FUJI CAT VAR
WOLVERINE INFINITY WATCH #2 FUJI CAT VAR
SAVAGE SWORD OF CONAN #3
FRIENDLY NEIGHBORHOOD SPIDER-MAN #4 FUJI CAT VAR
UNCANNY X-MEN #14
LIFE & DEATH OF TOYO HARADA #1