Mama Moon Boutique via Amazon offers 6 Reusable Smart Sheep XL Wool Dryer Balls
for $18.95. Coupon code "MEMDAYWK" cuts it to $13.26
. Plus, Prime members receive free shipping
. (Non-members can spend $49 to qualify for free shipping; otherwise, shipping costs $5.85.) That's tied with our March mention and the lowest total price we could find by $4. They purport to naturally soften laundry without chemicals or synthetics.