Costco keeps its warehouses full of merchandise at prices much closer to wholesale than you can find at traditional retailers, including a range of furniture, lamps, small appliances and home decor items, not to mention clothes and a broad selection of groceries, most sold in bulk. The inventory at a particular warehouse can be hard to check in advance, because the stores don't always stock the same products that are available on Costco's website. Still, if you know exactly what you're looking for, it's worth a phone call to your local warehouse to see if they have the items you like. Alternatively, you can use Costco's mobile app to create a shopping list specifically including items your local warehouse has on sale.
Inquiring About Online Items
Find the product or products you want to buy on Costco.com. Note the item number for each one -- you can find it to the left of the pricing box. For safety, note the product name and manufacturer as well.
Look up the phone number for your nearest Costco warehouse. Search by city, zip code or address on the site's warehouse locator; then hover your mouse over your preferred warehouse on the map to reveal the location's phone number.
Phone your chosen warehouse. Dial 0 to speak to a store associate. Give her the item numbers of the products you're looking for, and ask whether the location has those items in stock. The assistant can check the availability for you. If the warehouse doesn't stocky the things you want, order them yourself off the website, provided that you are a Costco member. The only items Costco orders into warehouses at customer request are tires.
Using the App for Inspiration
Costco's mobile app includes a list of time-sensitive, warehouse-specific offers. You can also shop Costco's website with the app. It includes a shopping list feature that enables you to add the items you want to buy on your next trip to Costco.
Download the Costco mobile app to your smartphone or tablet. Select your local warehouse when the app prompts you to, or scroll down to "Warehouse Locator" on the main menu and input your zip code to find your nearest store.
Select "Warehouse Offers" on the main menu. If any items are discounted at your chosen warehouse, the app lists them, and, as a member, you will automatically receive the sale price. Make a note of the item numbers of any products you want to buy, or simply add them to your app's shopping list feature.
Phone ahead to make sure your chosen items aren't out of stock. Tap the warehouse map icon under "Warehouse Locator" to reveal the warehouse's phone number. Call the warehouse and dial 0 to speak to a store associate; then ask him to confirm that the warehouse hasn't sold out of the things on your shopping list. Give the store associate the item numbers of your selections, and he can check whether the warehouse still has them available.