Shadowrun 5E Mega Bundle from Humble Bundle has 17 items for $18 although one 64-page adventure book.

CAT-27000 Shadowrun 5E Core Rulebook (2013)
CAT-27002 Run & Gun (2014) - weapons and expanded combat rules
CAT-27003 Street Grimoire (2014) - magic companion
CAT-27004 Run Faster (2014) - player character options
CAT-27005 Chrome Flesh (2015) - cyberware sourcebook
CAT-27006 Data Trails (2015) - matrix sourcebook
CAT-27007 Rigger 5.0 (2015) - vehicle companion
CAT-27008 Howling Shadows (2016) - critter sourcebook
CAT-27011 Forbidden Arcana (2016) - advanced magic rulebook
CAT-27012 Street Lethal (2018) - combat supplement
CAT-27013 Kill Code (2018) - advanced matrix sourcebook
CAT-27231 Dark Terrors (2017) - horror monsters
CAT-27200 Stolen Souls (2014) - deep shadows sourcebook for New York
CAT-27451 Market Panic (2016) - Big Ten megacorps sourcebook
CAT-27506 Complete Trog (2017) - ork and troll sourcebook
CAT-27110 Seattle Sprawl (2016) - boxed supplement
CAT-27401 Serrated Edge (2016) - campaign

Bundle of Holding did two SR5 bundles three years ago

SR5 Essentials - 7 books for $31
SR5 Lethal Streets - 7 books for $27

SR5 Essentials is in the Humble Bundle offer. Two of the SR5 Lethal Streets books are in the Humble Bundle offer. I declined to buy the Bundle of Holding offer because it had few adventures. Although $18 is a great price there is only one adventure book and SR5 was a big RPG line so the 17 books are a fraction of the ones published. I think I'll pass on this.