What Are Costco Liquidation Pallets? A huge amount of products from Costco that are offered as a single lot at a reduced price. Items may include groceries, electronics, household goods, furniture, appliances, and more. Typically, the inventory is overstock, returns, discontinued goods, or seasonal goods that Costco wants to move rapidly. Items in the pallet may still be in their original packaging and items could be brand-new, used, or open-box. Additionally, products with a short shelf life that are frequently offered at a significant discount can be found on Costco pallets.