I've tended to avoid Storybundle's fiction bundles because they're almost always either a bunch of self-pub stuff from authors I've never heard of and don't have time to determine whether they're any good, or for some reason they have Kevin J. Anderson curate them. Kevin J. Anderson is the co-author of the Dune books that came out after Frank Herbert's death. They're super terrible. I have not read any of KJA's individually written novels to conclusion, but a brief skim has not suggested that they are worth reading on any level. As such, while his collections occasionally include authors I do enjoy (Kristine Kathryn Rusch, for example), I have to assume his taste in writing is very different from my own and be skeptical of anyone I don't know in said collections. Plus they usually include his own stuff, and ew.
Today they announced a Haikasoru bundle. https://storybundle.com/japan
Haikasoru is Viz's label for the Japanese SF/fantasy novels that they are translating and because they have the entirety of that country's fiction output to skim the cream off of, they're pretty universally fantastic. You may recognize the name All You Need is Kill, for example, the novel that inspired Edge of Tomorrow. That's published by Haikasoru. This particular bundle doesn't include that novel, sadly, although it includes Slum Online by the same author. But it does have things like the first Legend of the Galactic Heroes novel, the inspiration for the amazing epic anime series that still hasn't had a full and proper English release (but it's coming!) Pretty damn good deal if you ask me.