Walmart offers the Maxim 120-Piece Train Set, model no. 50074, for $36.27. Opt for in-store pickup to avoid the $4.97 shipping fee. That's $2 under our February mention and the lowest price we've seen. (It's a current low by $18.) This wooden set can be reconfigured for hundreds of different layouts and includes two trains, a suspension bridge, roundhouse, viaduct supports, and accessories.