Let's take a look at Humble Bundle's Starfinder bundle. Ignore the $50 level which adds physical items and then you still have to cover shipping. For $30 you get the below PDFs. It's $327.50 (full price at Paizo store) for 1/10th the price which is pretty great. Also it's supplement light (which is fine with me) and adventure heavy (even if the Starfinder Society adventures are sort of scattershot and may not be that independent). The Flip-Mat are also nice.

It's too much of a bargain to pass up. Unless you're the sort of person who'll start buying more to complete their collection, because Paizo puts out a lot of product so it gets kind of pricey. I will buy it since I'm not inclined to buy more unless it's a similar bargain bundle.

PZO-???? Starfinder Beginner Box (2019) $10

PZO-7101 Starfinder Core Rulebook (2017) $10 (own)
PZO-7102 Starfinder GM Screen (2017) $14
PZO-7103 Starfinder Player Character Folio (2017) $7
PZO-7105 Alien Archive (2017) $10
PZO-7107 Starfinder Pact Worlds (2018) $10

PZO-7213 Starfinder #13: Dawn of Flame p1: Fire Starters (2019) - double-sized adventure module ($16)
PZO-7214 Starfinder #14: Dawn of Flame p2: Soldiers of Brass (2019) - double-sized adventure module ($16)
PZO-7215 Starfinder #15: Dawn of Flame p3: Sun Divers (2019) - double-sized adventure module ($16)
PZO-7216 Starfinder #16: Dawn of Flame p4: The Blind City (2019) - double-sized adventure module ($16)
PZO-7217 Starfinder #17: Dawn of Flame p5: Solar Strike (2019) - double-sized adventure module ($16)
PZO-7218 Starfinder #18: Dawn of Flame p6: Assault on Crucible (2019) - double-sized adventure module ($16)

PZO-7301 Flip-Mat: Basic Terrain (2017) ($10.50)
PZO-7302 Flip-Map: Basic Starfield (2017) ($10.50)
PZO-7303 Flip-Mat: Cantina (2017) ($10.50)
PZO-7305 Flip-Mat: Urban Sprawl (2018) ($10.50)
PZO-7306 Flip-Mat: Space Station (2018) ($10.50)
PZO-7308 Flip-Mat: Asteroid (2018) ($10.50)
PZO-7309 Flip-Mat: Ghost Ship (2018) ($10.50)
PZO-7311 Flip-Mat: Jungle World (2019) ($10.50)

PZO-9500-11 First Contact (2017) - Free RPG Day 2017 half-sized adventure module (free)
PZO-9500-13 Skitter Shot (2018) - Free RPG Day 2018 half-sized adventure module (free)
PZO-9500-15 Skitter Crash (2019) - Free RPG Day 2019 half-sized adventure module (free)
PZO-9500-17 Skitter Home (2020) - Free RPG Day 2020 half-sized adventure module (free)

PZO-SFS-9901 Starfinder Society: The First Test (2021) - 2/3rds-size adventure module ($6)
PZO-SFS-9902 Starfinder Society: For the Factions (2021) - adventure module ($6)

PZO-SFS-0103 Starfinder Society: Yesteryear's Truth (2017) - 2/3rds-size adventure module ($6)
PZO-SFS-0109 Starfinder Society: Live Exploration Extreme! (2018) - adventure module ($6)
PZO-SFS-0116 Starfinder Society: Dreaming of the Future (2018) - adventure module ($6)

PZO-SFS-0201 Starfinder Society: Pact World Warriors (2019) - adventure module ($6)
PZO-SFS-0203 Starfinder Society: The Withering World (2019) - adventure module ($6)

PZO-SFS-0401 Starfinder Society: Year of the Data Scourge (2021) - adventure module ($6)

PZO-30061 Pathfinder Flip-Mat: Tech Dungeon (2014) ($10)
PZO-30063 Pathfinder Flip-Mat: Flooded Dungeon (2015) ($10)
PZO-30079 Pathfinder Flip-Mat: Elemental Planes Multi-Pack (2017) ($18)

PZO-SQW-30022 Pathfinder Flip-Mat Classics: Darklands (2009) ($10.50)

Addendum: I ended up buying this pack and my first comment is that the PDF Flip-Mats ware incredibly expensive.