Need a gift for a little engineer? Amazon and Target have the popular Ravensburger GraviTrax PRO Vertical Marble Run Starter Set for $35.99 shipped, regularly $84.99. This is the lowest price we have seen!
This set comes with 153 pieces. It allows you to design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your marbles to the finish.
Offer valid for a limited time. Shipping is free with Prime or Redcard.
See more online shopping.