Walmart offers the LEGO Scooby-Doo Haunted Lighthouse Building Kit, model no. 75903, for $34.99. (Amazon charges the same with free shipping for Prime members.) Opt for in-store pickup to dodge the $4.97 shipping fee. That's $5 under our mention from three weeks ago, the best now by $10, and the lowest price we've seen. This 437-piece set includes four minifigures, a Scooby-Doo figure, speedboat, and haunted lighthouse.