Walmart offers the K'NEX 350-Piece Super Value Tub
, model no. 12104, for $10
. Shipping adds $2.97
, or choose free Site-to-Store. That's tied with our mention from two weeks ago and the lowest total price we could find for this set by $6. Sales tax is added where applicable. This kit includes 350 parts and instructions for constructing 20 different models.