Walmart offers the Sterilite 18-Gallon Storage Box 8-Pack in Gray, model no. 18158208, for $38.97. Choose in-store pickup to avoid the $4.97 shipping fee. That's a buck under our mention from a year ago and the lowest price we could find for an 8-pack now by $15. Each box measures 24" x 18" x 16" and features a snap-on lid.