Hurry! Get the K'NEX 70 Model Building Set with 705 pieces for only $16.88 at Amazon. That's 58% off of the original price of $39.99. The set is also on sale for $16.88 at Walmart. Compare to $28.49 at Kmart.

The set includes everything needed to build a hot air balloon, boats, trucks, a sand castle and more! This is the ultimate gift for building fanatics.

Shipping is free with Amazon Prime or a $35 qualifying purchase.

K'nex 70 Model Building Set, 705-Piece Set (reg $44.99) $16.88
Free shipping with Amazon Prime or a $35 purchase
Final Price: $16.88