Product 76006 is not discontinued. However, this product is store specific to Costco, Amazon and Walmart. You will only be able to locate this particular product at these retailers if they have this item in stock. Please contact these retailers to check availability.
If you are not able to locate this product in store you can purchase a similar product from Avery.com using this link. https://www.avery.com/products/sheetprotectors/75304