$3 free shipping w/ Prime点我购买
Amazon offers Prime members the Canine Hardware ChuckIt! Small Ultra Ball 2-Pack for $2.87 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.14.) That's the lowest total price we could find by $5. These rubber balls are designed to be used with Chuckit! ball launchers.
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