Sam's Club offers its members the Glasslock 20-Piece Food Storage Set, model no. 11293, for $19.98 with free shipping. (Non-members must pay a $2 surcharge.) That's tied with our mention from last November and the lowest total price we could find today by $13. It includes ten microwavable glass containers (from 0.73-cup to 6.3-cup) with lids.