Humble Bundle has a Red Sonja 50th Anniversary bundle of comic books from Dynamite Comics. I own a bunch from a previous bundle but there's a lot more that I don't own so $18 seems quite worthwhile. It is kind of weird that some of these are individual issues when there are trade paperbacks available. I guess it's so that they can claim "we’re doubling up the 50th anniversary party with over one hundred (100+!) comics & collections".

Don't Own

Red Sonja: One More Day
Red Sonja and Cub
Vampirella/Red Sonja #1-12
The Invincible Red Sonja #1
Red Sonja: Monster Isle
Red Sonja: Age of Chaos #1-6
Red Sonja: Worlds Away v3-5
Red Sonja: The Queen of Plagues v2-3
Queen Sonja #6
Legends of Red Sonja #1-5
Red Sonja: The Superpowers #1-5
Red Sonja: Birth of the She-Devil #2-4
Red Sonja v5 #6-28
Red Sonja: She-Devil with a Sword v4-13

Already Own

Red Sonja: Wrath of the Gods #1-5
Red Sonja: Vulture's Circle #1-5
Red Sonja: Revenge of the Gods #1-5
Red Sonja: Black Tower #1-4
Red Sonja: The Ballad of the Red Goddess
Red Sonja: Worlds Away v1-2
Red Sonja: The Queen of Plagues v1
Queen Sonja #1-5
The Adventures of Red Sonja v1-3
The Further Adventures of Red Sonja v1
Red Sonja: Birth of the She-Devil #1
Red Sonja v5 #1-5
Red Sonja: She-Devil with a Sword v1-3