I was going through some boxes yesterday and I stumbled onto this beauty. I can't recall where I purchased it, but I suspect it was at a specialty magazine store in St. Marks that no longer exists. The store only sold fanzines, movie monster magazines, and really niche books and literature. In any case, this was one of those artifacts that really got me into retro sci-fi popular culture (well this and MST3K).
Honestly, what a treasure. I really can't believe I still had this magazine tucked away. It's still in fairly good condition which might be the biggest shock of all.
And, if you are interested, the Planet X Magazine website is still up and running. You can check it out by clicking here.