The Spirit of 77 Bundle is $19 for the following from Monkey Fun Studios:

Spirit of 77
Wide World of 77
Spirit of 77 Greatest Hits 1 - adventures (not roles or stories) published in Double Features #1-3
Spirit of 77 Greatest Hits 2 - adventures published in Double Features #4-6

Special Episode 4: Masterpiece 77
Special Episode 5: Wrath of Cons
Special Episode 7: Return to the Cruise Ship of the Damned

Rad Planet: Big Trouble in Little Jupiter
Spirt of the Seventh Realm: The Once, Twice, and Future King

That's pretty much everything published except for:

Special Episode 0: The Cruise Ship of the Damned (free adventure)
Spirit of 77 Greatest Hits 3 - adventures published in Double Features #7-9

Spirit of 77 is a Powered by the Apocalypse game (each "class" has a sheet with all their special abilities, most actions are 2d6 roll high, most everything is player-initiated and the GM has less mechanical things to do than other RPGs). The game and adventures are based on 70's films and tv shows. I played this once at DunDraCon and although fun made me realize that PbtA games are not for me as a player as it depends on PCs to push the story along.

Still for $19 getting almost everything seems worth it.