Just heard of this today.
$15/ month membership. $10 for 2 day shipping for each dozen. You can order as many balls as you want, must pay shipping, and max order is 2 per order i believe.
They claim to be made of same materials as ProV1.
Pretty neat idea, not “free” but you can definitely get your money worth. A prov1 cost like $1.00 to make.
