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 8/2/15:
Seeing recent recommendations showing up in 2nd issue form. You have INVADER ZIM #2 (and the INVADER ZIM #2 INCV VAR VASQUEZ). Plus INVADER ZIM #1 2ND PTG signifying a sell out.
BOOK OF DEATH #2 CVR A NORD too, as well as BOOK OF DEATH #1 2ND PTG. New series like WELCOME BACK #1 MAIN CVRS also show up. And the WTF moment with BLOODSTRIKE #2 CVR B LIEFELD.
STAR WARS #8
INVADER ZIM #2
INVADER ZIM #2 INCV VAR VASQUEZ
MAD MAX FURY ROAD MAX #1 2ND PTG
ARCHIE #2 FIONA STAPLES REG CVR
JUSTICE LEAGUE #43
INVADER ZIM #1 2ND PTG
BOOK OF DEATH #2 CVR A NORD
MMW AMAZING SPIDER-MAN HC #17
BOOK OF DEATH #2 CVR B CRAIN
BOOK OF DEATH #2 CVR C KANO
STAR WARS #8 CHISTOPHER ACTION FIGURE VAR
AMAZING SPIDER-MAN RENEW YOUR VOWS #4
WOLF #2
GUARDIANS OF KNOWHERE #3 NIGHTOW MANGA VAR
MINIONS #1 2ND PTG
MMW AMAZING SPIDER-MAN HC 17 DM VAR ED 226
AMAZING SPIDER-MAN RENEW YOUR VOWS #4 MANGA VAR
FLASH SEASON ZERO TP
BLOODSTRIKE #2 CVR B LIEFELD
LAST DAYS OF AMERICAN CRIME HC
WELCOME BACK #1 MAIN CVRS
BOOK OF DEATH #1 2ND PTG
HOUSE OF M #1 ASRAR VAR
RICK & MORTY #5 INCV VAR MCGINTY