Walmart offers the LEGO Super Heroes Rhino and Sandman Set, model no. 76037, for $28.99. (Target has it for the same with free shipping, as does Amazon via Prime.) Choose in-store pickup to avoid the $5.97 shipping fee. That's tied with our mention from a week ago and the lowest price we could find now by $4. It includes Rhino, Spider-Man, Iron Spider, and Sandman minifigures.