Neon Lords Bundle from Bundle of Holding is a fixed $15 price for "the gonzo slime-punk post-apocalyptic cassette-future RPG from Super Savage Systems."

Neon Lords of the Toxic Wasteland ($10, 272 pages) - "Ultra-violent, style-matters, half medieval fantasy, half B-movie, Neon Lords of the Toxic Wasteland builds on old-school B/X rules for no-holds-barred to-the-max action in a post-apocalyptic Earth where magic mixes with the technology of the 1980s and early '90s."

Riders of the Burpwarp ($20, 95 pages) - "adds nearly a dozen new character classes"

Warpshine Runners ($20, 128 pages) - "An abandoned Humanoid Mining Colony south of Nueva Angeles has been up to no good!…The map has 37, that's right, 37 marked locations, each with a slew of info as well as adventure hooks." So I guess an adventure setting.

Space Bulk ($10, 84 pages) - "a random generator to build wild locations for adventures that take place on Neo-Terraxx and beyond."
Mutant Hive Warz ($7, 24 pages) - "A hex hunt for mutant hybrid BUGZ."
Sleazoid Mutant Freaks From Cannibal Island ($6, 11 pages) - adventure where you hunt for the organ thieves that stole your kidney.

B/X style riles is a plus and has a good amount of adventuring material so will probably buy.