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Amazon [amazon.com] has 413 pcs LEGO Technic Deep-Sea Research Submarine Toy for $28.99. Shipping is free w/ Prime or on $35+.

Product Description from Amazon:[list][*]SUBMARINE TOY FOR KIDS – Let young science and engineers create their own deep-sea adventures with this LEGO Technic Deep-Sea Research Submarine building set for kids ages 9 and up[*]REALISTIC FEATURES – This creative building set includes lots of realistic features like the rotating propellers and grabbing arm to help kids explore how submarines work