Home Slickdeals Costco Members: Smart Design Premium Cabinet Storage Extendable Shelf (Set of 2)... Slickdeals Costco Members: Smart Design Premium Cabinet Storage Extendable Shelf (Set of 2) $16 + $4 S/H By ARCOM - 18 February 2021 70 0 SHARE Facebook Twitter Go to the deal page: Costco Members: Smart Design Premium Cabinet Storage Extendable Shelf (Set of 2) $16 + $4 S/H