Walmart offers the K'NEX 325-Piece Super Value Tub
, model no. 12063A, for $10
. Shipping adds $3.97
, or opt for free Site-to-Store. Even with shipping, that's tied with our mention from two weeks ago and the lowest total price we could find. Sales tax is added where applicable. This kit includes 325 parts and instructions for constructing 20 different models.