$13 free shipping w/ Prime点我购买
Amazon offers Prime members the K'Nex 368-Piece K-FORCE Build and Blast Dual Cross Building Set, model no. 47526, for $12.56 with free shipping. (Non-Prime members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.76.) That's the lowest total price we could find by $18. It includes two blaster chambers, three skull dart holders, two quick fit grips, two preload rings, and seven foam darts to create six different types of battle gear, including the dual cross blaster.
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