The values of comic books presented in The Overstreet Comic Book Price Guide are routinely studied to note market trends and comparison to titles that share similarities. The age when the books were published, and specialized genre are among the factors by which they are compared. One of the most popular non-superhero genres that has been tracked is science fiction. Whether it’s science and technology or aliens and otherworldly locales, sci-fi comics prove popular with collectors and are still affordable in most collectors’ budget ranges. Below is the list of the top 10 science fiction issues as reported in 2000 in the Guide #30.

#1 – Mystery in Space #1 – $2,600
#2 – Strange Adventures #1 – $2,600
#3 – Showcase #17 (Adam Strange) – $2,100
#4 – Showcase #15 (Space Ranger) – $1,750
#5 – Journey Into Unknown Worlds #36 – $1,700
#6 – Fawcett Movie (Man from Planet X) – $1,650
#7 – Strange Adventures #9 – $1,600
#8 – Weird Fantasy #13 (#1) – $1,600
#9 – Weird Science #12 (#1) – $1,600
#10 – Weird Science-Fantasy Annual 1952 – $1,500