GDW 2300 AD bundle for $30 contains:

Base

GDW-1000 Traveller: 2300 AD 1E
GDW-1010 Aurore Sourcebook
GDW-1011 Ships of the French Arm
GDW-1012 Nyotekundu Sourcebook
GDW-1030 Beanstalk
GDW-1031 Energy Curve
GDW-1032 Kafer Dawn
GDW-1033 Mission Arcturus

Bonus

GDW-1000 2300 AD (2E)
GDW-1013 Colonial Atlas
GDW-1014 Kafer Sourcebook
GDW-1034 Invasion
GDW-1035 Bayern
GDW-1036 Ground Vehicle Guide
GDW-1037 Equipment Guide
GDW-1038 Ranger

Other products not included

GDW-1015 Earth/Cybertech Sourcebook
GDW-1016 Deathwatch Program
GDW-1017 Rotten to the Core


Far Future Enterprises, which I think is Marc Miller's company, sells GDW PDF sets on CD-ROMS. For $35 + shipping their 2300 AD CD-ROM contains the above plus

GDW-1050 Star Cruiser (boxed game of starship combat) [btw one of the shortcomings of rpggeek and boardgamegeek is that hybrid product lines are separated between the two]

2300 Resource #0-2 (newsletter)

Now is the Time (RPGA tournament)
Having Seen the Sky (unpublished, partially edited adventure)

Challenge Magazine articles (83 articles)

Miscellaneous bonus materials

So for completeness I would go with the CD-ROM which is about $10 more than the Bundle of Holding.