Amazon offers its Amazon Prime members the Elmer's Washable Disappearing Purple Glue Stick 6-Pack, model no. E1560, for $1.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise shipping adds $5.14.) That beats last week's mention by $1 and it's the lowest total price we could find now by $15. (We saw it for a buck less at the start of August, however.) It goes on purple and dries clear.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months.