Target offers the Elmer's Washable No-Run School Glue 4-oz. Bottle in White for 50 cents. Choose in-store pickup to dodge the $5.18 shipping fee. (Amazon charges the same price with free shipping via Prime; Walmart charges pennies more.) That's 24 cents under our March mention, the lowest we've seen, and a buck under what you'd pay in other local stores.
Amazon offers Prime members the Elmer's Washable All-Purpose School Glue Stick 60-Pack, model no. E501, for $15.99 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $7.94.) That's the lowest total price we could find by $9. Each clear glue stick contains 0.24-oz. of adhesive.