Walmart offers the Louisville Ladder 2-Foot Aluminum Step Stool, model no. AS3002, for $23.98. (Amazon has it for the same price exclusively for Prime members.) Choose in-store pickup to dodge the $4.97 shipping fee. That's the lowest price we could find by $16, excluding other Amazon sellers. It folds for storage and features a 300-lb. weight capacity and molded standing top.