Walmart offers the LEGO Ninjago Thunder Raider Set, model no. 70723, for $18.52. Opt for Site-to-Store pickup to avoid the $4.97 shipping charge. (Amazon sells it for the same price with free shipping for Prime members.) That's tied with our mention from three weeks ago as the lowest price we've seen. (It's a current price low by $11.) It includes the Thunder Raider, weapons, and three mini-figures.