Walmart offers the LEGO Scooby-Doo The Mystery Machine Set, model no. 75902, for $24.88. (Kmart has it for the same price with free in-store pickup and Amazon has it for the same price with free shipping for Prime members.) Opt for in-store pickup to avoid the $4.97 shipping fee. That's tied with our mention from a week ago and the lowest price we could find now by $5. This 301-piece set includes three mini-figures.