How to Buy Products from Costco to Sell on Amazon?

Quick answer: Yes, you can buy products from Costco and sell them on Amazon. Reselling genuine products you bought legally is generally allowed (see is retail arbitrage legal?), but you must match the Amazon listing exactly, check brand restrictions before you buy, and include Costco’s membership fee and Amazon’s fees in your profit math. Costco does not run an official store on Amazon, so Costco multipacks and Kirkland Signature items you see there are generally sold by third-party resellers. Below you’ll find the pros and cons, the best tools and a step-by-step process.

What is Retail Arbitrage? 

Retail arbitrage is the practice of buying products from brick-and-mortar retail stores at a lower price and then selling them at a higher price, often on online marketplaces like Amazon or eBay. The goal is to profit from the difference between the purchase price and the selling price. This strategy involves finding deals, discounts, or clearance items in physical stores and reselling them for a profit. Retail arbitrage can be a lucrative way to make money, especially if you have a keen eye for finding bargains and understand market demand.

In this article, we will discuss sourcing products from Costco. However, Walmart is another lucrative option for arbitrage sourcing. Make sure you read our guide on how to buy products from Walmart to sell on Amazon before you start sourcing, and compare Costco with another warehouse club in our guide on buying from Sam’s Club to sell on Amazon.

Advantages and Challenges of Buying from Costco

Before talking about the steps of buying products from Costco and reselling them on Amazon, let’s talk about the pros and cons of Costco.

Advantages:

1. Low Prices from Bulk Buying 

When you buy in bulk at Costco, the cost per unit is much lower compared to buying items separately. This makes it easier to achieve higher profit margins.

1. High Quality from Reputable Brands:

 For example, Kirkland Signature is one of the most popular Costco brands. It offers high-quality products at very good prices, and many of its items are private label that often perform as well as national brands.

1. Fast-Moving Products

Costco carries many popular products that people buy daily on Amazon. Once you find these items listed on Amazon, you can source them at Costco and sell them quickly.

Challenges:

1. Invoices and Amazon’s Requirements :

 One of the biggest challenges with Costco products is that they only provide receipts, not traditional invoices. On Amazon, if you need documents to get ungated in certain brands or categories, a receipt may not be enough. To reduce this issue, it’s suggested to use a Costco Business membership so your purchase details appear more professional.

1. Packaging Differences 

 Many Costco products come in packaging that don’t match existing Amazon listings. You must make sure your listing exactly matches the product you are selling, or else you may need to create a new listing. Sending items with different packaging than what customers expect can lead to complaints.

• Limited or Seasonal Stock 

 Costco inventory often changes. A product you find today may not be available next month, especially seasonal items. You need to plan your listings and inventory carefully to avoid running out of stock.

• Brand Restrictions and Authorization

Some brands at Costco are gated on Amazon, which means you need approval to sell them. Before purchasing, check Amazon’s restrictions before you buy. Amazon generally asks for invoices from a manufacturer or distributor for approvals, so Costco receipts are rarely enough for ungating. See our guide to Amazon restricted categories and brands. OABeans leads-list members also get free access to our Amazon ungating course (Amazon decides every approval, so nobody can guarantee one).

How to Find Profitable Products on Costco?

To successfully buy products from Costco to sell on Amazon, you need to follow these two essential steps:

1. Researching Market Trends

Keeping an eye on market trends is crucial for maximizing profits. Use tools like the Amazon Seller App or Profit Bandit to analyze sales rank, pricing history, and customer reviews. 

Understanding market trends also means being aware of seasonal fluctuations, consumer preferences, and emerging niche markets. By monitoring these trends, you can anticipate changes in demand and take advantage of new opportunities before your competitors do. This proactive approach can give you a competitive edge and increase your profitability over time.

2. Evaluating Product Profitability

While market trends give you a broad overview, evaluating product profitability requires a detailed approach. Consider the product’s selling price on Amazon, associated fees (like FBA fees), and the estimated cost of sourcing the product from Costco. Calculating the potential profit margin will help you decide if a product is worth pursuing.

Also, consider indirect expenses such as storage fees, shipping costs, and advertising expenses. These hidden costs can impact your overall profitability and should not be ignored during the product evaluation process. By thoroughly analyzing both direct and indirect costs, you can make informed decisions that align with your financial goals and business objectives.

Best Tools to Find Profitable Products from Costco

To buy products from Costco to sell on Amazon, you need the right tools. Here are seven useful options to help you identify the best items both in-store and online:

1. Keepa

Keepa is a browser extension that tracks the price history of products on Amazon. By analyzing historical price data, you can identify trends and make informed decisions about which products are likely to be profitable. In-store, you can use Keepa on your mobile device to check prices and sales history on the spot. Make sure you read our Keepa reviews to get a better idea of how it works. 

2. Profit Bandit

Profit Bandit (by SellerEngine, $9.99 per month) is a mobile scanner app designed for in-store use; see our Profit Bandit review. To buy products from Costco to sell on Amazon, simply scan a product’s barcode to get instant information about its Amazon selling price, potential profit, and sales rank. The app also factors in Amazon fees to provide an accurate profit estimate.

3. CamelCamelCamel

CamelCamelCamel is a website that provides price tracking and alerts for Amazon products. It helps you monitor price changes and sales trends, making it easier to spot profitable items on Costco’s website. You can set up alerts for price drops to ensure you buy products at the best price. Our CamelCamelCamel reviews can give you a better idea of this tool and its features. 

4. ScanPower

ScanPower is a comprehensive mobile app for in-store retail arbitrage. It offers barcode scanning, real-time pricing information, profit calculations, and sales rank data. ScanPower helps you quickly determine the profitability of products while shopping at Costco. Our ScanPower review covers its features and alternatives, and our list of Amazon seller scanner apps compares other options.

5. Costco App and Member Savings

Costco’s own app and website show current member-only savings, online-only deals and warehouse prices. Check them before each trip, then verify every deal on Amazon with Keepa or a scanner app before you buy.

• SmartScout or Jungle Scout Extension

By using these tools or their extensions, you can analyze prices, sales volume, and ROI. They help you estimate how well a Costco item might sell on Amazon over the year. For example, you can check sales rank history and competition to guess your chances of winning the Buy Box and earning profit.

7- Amazon Seller App

This is the official Amazon app for smartphones. It lets you scan product barcodes in Costco and instantly see the Amazon listing, sales rank, competitor offers, and current prices. This tool helps you make quick decisions right in the store when deciding whether to buy items.

If you’re a beginner wondering whether Costco arbitrage still works: it can, but margins on many Costco items are thinner than on clearance finds at other retailers, so careful math matters more than volume. Focus on items with a clear price gap between Costco and Amazon, steady sales rank and few competing sellers.

The key is simple: calculate your costs and potential profit carefully (our guide to calculating Amazon profit accurately walks through it), and use the tools recommended in this article.

Things to Consider When Buying Products from Costco

When you want to buy products from Costco to sell on Amazon, there are several important factors to consider to ensure you maximize your profits and make the best purchasing decisions:

1. Membership and Bulk Buying

Membership: To shop at Costco, you need a membership. Costco currently offers Gold Star ($65/year), Business ($65/year, designed for business purchases) and Executive ($130/year, with a 2% annual reward on qualifying Costco purchases). If you buy regularly for resale, the Executive reward can offset part of the fee.

Bulk Buying: One of Costco’s main advantages is the ability to buy in bulk. This reduces the unit cost of products, increasing your potential profit margins. Make sure you have enough storage space and a plan to sell the products quickly to avoid holding excess inventory.

2. Seasonal and Clearance Sales

Seasonal Sales: Costco frequently offers seasonal sales. These sales are a great opportunity to purchase products at discounted prices. Pay attention to the timing of these sales to stock up on high-demand items.

Clearance Sales: Clearance sales are another chance to find heavily discounted products. Use tools mentioned above to get alerts about these sales and spot deals that might otherwise go unnoticed.

3. Exploring the Store

Costco stores are large and carry a wide range of products, from electronics and groceries to clothing and furniture. Take your time to explore each aisle to discover hidden gems and unbeatable deals.

Costco’s private-label brand, Kirkland Signature, is known for its quality and value. These products often provide significant savings compared to name-brand alternatives and can be very profitable for resale.

4. Market Research and Profitability Analysis

Use tools like Keepa to research market trends and analyze the price history of potential products. Evaluate the potential profitability of each product by considering the selling price on Amazon, associated fees, and the cost of sourcing from Costco. Don’t forget to factor in indirect costs like storage fees, shipping, and advertising expenses.

Step by Step Guide to Sell Costco Products on Amazon

Step 1: Create an Amazon Seller Account

If you are a beginner seller and don’t have an Amazon account, go to Amazon Seller Central and sign up for it. Choose between an individual plan or a professional plan, depending on the scale of your business. It is important to know that the Individual plan has no monthly fee but charges $0.99 per item sold, while the Professional plan costs $39.99/month (see Individual vs Professional seller plans). 

Step 2: Get a Costco Membership

Purchase a Costco membership. The options are Gold Star and Business (both $65/year) and Executive ($130/year with a 2% annual reward). The Business membership is designed for business purchases, which suits resellers. After getting the membership, you can take advantage of benefits, such as bulk buying and access to exclusive discounts.

Step 3: Research and Select Products

Make sure that the items you pick are not restricted. If they are, ensure you have the necessary brand approvals or category ungating done. 

Use the tools mentioned earlier, like Keepa, Profit Bandit, Jungle Scout, SmartScout and CamelCamelCamel to analyze Profitability, sales rank and pricing on Amazon. Look for products with a high demand and good profit margins. Keep an eye on Costco’s seasonal and clearance sales to find discounted products. At the end of this step, you should have a list of products.

Step 4: Purchase Products

Visit a Costco warehouse and explore various aisles to buy products from Costco to sell on Amazon. there is no doubt that you should stick to your researched list, but stay alert for unexpected clearance deals. Use mobile apps like Profit Bandit to scan barcodes and check profitability on the spot. You can also browse Costco’s website for deals and use browser extensions like Honey to track price changes and find discounts.

Keep every itemized receipt for your bookkeeping and taxes. Costco provides receipts rather than distributor invoices, so they work as proof of purchase but usually not for Amazon brand or category approvals.

Step 5: List Products on Amazon

Log in to Amazon Seller Central and create listings for your products. Ensure your listings are detailed and contain accurate descriptions.

Price your products competitively by analyzing similar listings on Amazon. Consider your costs and desired profit margin. You can also invest in repricing tools. 

Step 6: Manage Inventory

After you buy products from Costco to sell on Amazon, store the purchased products in a safe, organized manner to ensure they remain in good condition.

Decide whether to use Fulfillment by Amazon (FBA) or Fulfillment by Merchant (FBM). FBA allows Amazon to handle storage, packaging, and shipping, while FBM means you handle these tasks yourself.

Step 7: Handle Shipping and Fulfillment

If using FBA, ship your products to Amazon’s fulfillment centers. Amazon will then manage storage, shipping, and customer service. If using FBM, ensure you have a reliable shipping method in place to deliver products promptly to customers.

Step 8: Monitor Sales and Performance

Regularly monitor your sales performance on Amazon Seller Central. Pay attention to metrics like sales volume, customer feedback and return rates.

Adjust your pricing, listings, and inventory based on sales data and market trends. Stay flexible and responsive to changes in demand. If an item is selling well, you’ll want to replenish it before running out, and if something isn’t selling, decrease its price or run a small promotion to move stale inventory.

 Also monitor Costco Stock, if you plan to keep sourcing the same item, monitor its availability at Costco too. maybe you need a plan to stock up or change to new products.

Step 9: Provide Excellent Customer Service

1. Address customer inquiries and issues promptly to maintain a good seller rating.
2. Handle returns efficiently and ensure customer satisfaction.

Step 10: Scale Your Business

1. Use your profits to purchase more inventory and expand your product range.
2. Continuously optimize your processes, from product sourcing to shipping, to improve efficiency and profitability. If you can afford it, invest in automation tools and software.

Conclusion

If approached strategically, it can be a lucrative business venture to buy products from Costco to sell on Amazon. For success in Retail Arbitrage from Costco, start by using data and tools to guide your decisions. Taking action with a valid invoice, checking brand restrictions, and leveraging market analysis tools will help smooth your path.

Whether you’re a seasoned seller or just starting out, following this step-by-step guide will help you navigate the complexities of arbitrage. With dedication and smart decision-making, you can turn your Costco finds into a thriving Amazon business. If you’d rather skip in-store scanning, OABeans members receive researched online arbitrage leads from many retail websites every day.

FAQ

• Can I buy from Costco and sell on Amazon?
  Yes. Buying genuine products at Costco and reselling them on Amazon is a common form of retail arbitrage. You must sell the items as new and unaltered, match the listing exactly, respect brand restrictions and avoid brands known for filing IP complaints.

• Does Costco sell on Amazon?
  Costco does not operate an official storefront on Amazon. Kirkland Signature and Costco-exclusive packs that appear on Amazon are generally listed by third-party sellers, which is why checking competition and listing accuracy matters before you buy.

• Do I need a Costco membership to resell Costco products?
  You need a membership to shop in Costco warehouses and for most purchases on Costco.com. A Gold Star or Business membership costs $65 per year, and an Executive membership costs $130 per year.

• How can sellers verify whether a Costco product is allowed for resale?
  Check the ASIN in Seller Central’s Add a Product tool for brand or category restrictions, and avoid items from brands known for issuing IP complaints.

• What are the biggest risks of sourcing from Costco for Amazon FBA?
  Price instability, limited stock availability, packaging variations, and higher saturation (especially when many sellers hop on the same deal).

• How can sellers ensure Costco packaging matches the Amazon listing?
  Compare unit count, size, bundle quantity, and UPC with the ASIN. Costco often sells multipacks or exclusive bundles that don’t match standard retail listings.

• Are Costco clearance items reliable for Amazon arbitrage?
  They can be profitable but risky due to limited restock and fast market saturation. Test small quantities and check sales rank history first.

• How can sellers reduce competition when sourcing from Costco?
  Focus on Costco-only SKUs, regional products, or items with strong replenishment patterns. Track local inventory differences between warehouses.