TUPPERWARE Modular Mates Potato And Onion Bins Smart Keepers Black Set Of Two. These bins are in excellent pre-owned condition and have been cleaned and are ready for use! This is the set of two with the larger bin holding potatoes and a smaller bin holding onions. They stack and they have the vent holes at the top. Potato bin retails for $39. Includes one 8¾-qt./8.3 L container and one seal with vented access panel. Onion and garlic bin retails for $37. Includes one 8¾-qt./8.3 L container and one seal with vented access panel. Total $76 Retail.