Charlton at it again... and again

Oh Charlton, why don't you want our money? You obviously need it. This is the cover of Doomsday +1 #1:
And this is the cover for #7:
Recycling covers? Oh wait... what? #7-12 are reprints of #1-6, from only two years previous? And Doomsday looked promising too, what with the early John Byrne art and story about astronauts teaming up with cavemen.

CHARLTON WILL NOT STAND TO HAVE A POTENTIAL HIT ON ITS HANDS!