Or get 10 for $3 http://www.joann.com/wood-shapes-balls/2180537.html?gclid=CMOqiP7829QCFUVXDQodEi4Hqw
Edited with correct 2" size:
Here's a bag of 10 for $12 https://www.amazon.com/Wood-Round-Ball-inch-Bag/dp/B019EE438W/ref=sr_1_2?ie=UTF8&qid=1498498919&sr=8-2&keywords=2+inch+wooden+balls
And individuals for about $1.50 each http://www.craftparts.com/round-wood-ball-p-2418.html?action=add_slave
You're right.
Here's a bag of 10 for $12 https://www.amazon.com/Wood-Round-Ball-inch-Bag/dp/B019EE438W/ref=sr_1_2?ie=UTF8&qid=1498498919&sr=8-2&keywords=2+inch+wooden+balls
And individuals for about $1.50 each http://www.craftparts.com/round-wood-ball-p-2418.html?action=add_slave