As far as I can tell this set is just missing the marbles, but I didn't open the sealed bags. There may be other missing parts. Please see photos
Ravensburger GraviTrax PRO Vertical Starter Set New open damaged box incomplete
The GraviTrax PRO Vertical Expansion Set offers 33 additional elements to reach new heights with your track. Create dynamic marble runs with walls, pillars and balconies that take your tracks to new heights. Whether you create towering three-dimensional structures or suspended tracks, see how high and clever you can build. Combine with the GraviTrax Pro Starter Set and take your track to a new level.
GraviTrax Pro - Vertical Expansion
GeekMom: GraviTrax PRO Adds Height and Bonus Physics to Your GraviTrax Experience - GeekDad
Ravensburger GraviTrax PRO - Vertical Starter Set
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Gravitrax Pro Vertical Extension Splitter - The Fun Company
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Ravensburger GraviTrax PRO Vertical Starter Set - Playpolis
GraviTrax PRO Adds Height and Bonus Physics to Your GraviTrax Experience - GeekMom
Ravensburger GraviTrax PRO Vertical Expansion Set - Marble Run and STEM Toy for Boys and Girls Age 8 and Up - Expansion for 2019 Toy of The Year Finalist GraviTrax, Gray