The Official LEGO balls are hard to find these days as they are no longer produced by Lego group. That’s why they are really expensive nowadays! But we have the solution!
We have developed our own LEGO GBC ball packs which meet the LEGO GBC requirements and are guaranteed to work with all our GBCs.
For every 3 LEGO GBCs of ours you need approximately 2 packs of 50 LEGO GBC balls to make the ball flow go consistent and smooth looking.
The LEGO GBC balls are available in the colors White and Orange.
Note that the LEGO EV3 balls have a slightly bigger diameter and will not work for most GBCs.