Match an Existing Listing vs Create a New One
Before you create a listing, you need to answer one fundamental question: Does your product already exist on Amazon?
If Yes: Add Your Offer to the Existing Listing (Matching)
If you sell a product that other sellers already list on Amazon, you do not create a new listing. You attach your offer to the existing ASIN. This is the standard case for:
- Arbitrage sellers: You buy a branded product at retail and resell it on Amazon
- Wholesale sellers: You buy from a distributor and sell through existing listings
- Book sellers: Every book with an ISBN already has a listing
If No: Create a New Listing
If your product does not exist on Amazon yet, you need to create a completely new listing. This is typical for:
- Private label sellers: Your own branded products
- Handmade products: Self-manufactured goods
- Exclusive imports: Products that were previously only available outside Amazon
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Step 1: Search for Your Product in Seller Central
Log into Amazon Seller Central and navigate to Catalog > Add a product. This is where the process begins.
Search by ASIN
Every Amazon product has a unique ASIN (Amazon Standard Identification Number). If you know the ASIN, enter it directly into the search field. You can find the ASIN on the Amazon product page under "Product Information" or in the URL.
Search by EAN/UPC
Most retail products carry an EAN barcode (Europe) or UPC barcode (US). Enter the 13-digit EAN or 12-digit UPC into the search field. Amazon automatically finds the matching listing.
Search by Product Name
If you have neither the ASIN nor the barcode, search by product name. Be as specific as possible (brand + model name) to find the correct product.
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Step 2: Add Your Offer to an Existing Listing (for Arbitrage and Wholesale)
If Amazon finds the product, you will see the existing listing with title, image, and ASIN. Click "Sell this product."
What You Need to Provide
- Price: Your selling price. Use the current Buy Box price and other sellers' offers as a reference.
- Condition: New, Like New, Very Good, Good, or Acceptable. For arbitrage and wholesale, it is almost always "New."
- SKU: An internal reference number you assign yourself. Use a system you can track later (e.g., purchase date + sequential number).
- Quantity: How many units you have in stock.
- Fulfillment channel: FBA (Amazon ships) or FBM (you ship).
What You Do NOT Need to Provide
Title, description, bullet points, and images are already in place. You inherit the existing listing content. You are simply an additional seller on the same product page.
After saving, you appear as a seller on the listing. The Amazon algorithm now decides whether you win the Buy Box, based on price, fulfillment method, and your seller metrics.
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Step 3: Create a New Listing (for Private Label)
If Amazon does not find an existing listing, click "I am adding a product not sold on Amazon."
Choose a Category
Amazon first asks for the product category. Select the most specific subcategory that fits your product. The category determines which fields are required and what referral fee applies.
Tip: Check which category your competitors use for similar products. Use the same one.
Product Identification
Amazon requires a product identification number in most categories:
- UPC (US): 12-digit barcode. Purchase through GS1 US (starting at around 250 USD for a single number).
- EAN (Europe): 13-digit barcode. Also available through GS1.
- GTIN exemption: In certain categories, you can request a GTIN exemption if your product does not have a barcode (e.g., handmade items, vintage products).
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Required Fields: What Every Listing Needs
Whether you create a new listing or edit an existing one, these fields are critical:
Product Title
The title is the most important element for Amazon SEO and for the customer. Amazon allows up to 200 characters (varies by category).
Recommended structure: Brand + Main Keyword + Key Feature + Size/Color/Variant
Example: "arbytrage Premium Notebook - 200 Pages Dot Grid - A5 Format - Hardcover Black"
Avoid: All-caps words, special characters, promotional claims ("Bestseller," "Cheap"), HTML tags.
Bullet Points
You have five bullet points available. Each should be no longer than 200 characters. Use them to communicate the most important product benefits and features.
Structure per bullet point: FEATURE IN CAPS: Explanation of the benefit
Example: "DOT GRID LAYOUT: Perfect for notes, sketches, and bullet journaling. Every dot spaced 5mm apart for maximum flexibility."
Product Description
The description allows for detailed information. Up to 2,000 characters. If you have Brand Registry, you can use A+ Content (Enhanced Brand Content) instead, which supports images and formatted text.
Read more about product photos that complete your listing.
Product Images
Amazon allows up to 9 images. The main image must meet these requirements:
- White background (RGB 255, 255, 255)
- At least 1,000 x 1,000 pixels (for zoom functionality)
- Product fills at least 85 percent of the image frame
- No watermarks, logos, or text on the main image
Additional images can show use cases, dimensions, package contents, and lifestyle scenarios.
Price
Set a competitive price. Research what comparable products cost before listing. With private label, you have more flexibility than with arbitrage, where you must align with existing prices.
Condition
For new products: "New." For used products: select one of the four condition levels (Like New, Very Good, Good, Acceptable) and add a condition note.
Search Terms (Backend Keywords)
In the backend of Seller Central, you can enter search terms that customers do not see. Use this field for synonyms, alternative spellings, and related terms. Maximum 250 bytes. Learn more in our backend keywords guide.
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Flat File Upload: Create Listings in Bulk
If you want to list many products at once, the Flat File upload is the most efficient method.
What Is a Flat File?
A Flat File is an Excel template that Amazon provides for each category. You fill in one row per product and upload the file to Seller Central. Amazon then creates all listings at once.
How to Do It
- Download the template: Seller Central > Catalog > Add products via upload > Select category > Download template
- Fill in the template: Each row is one product. Required fields are highlighted in yellow.
- Upload: Upload the file in Seller Central and wait for processing.
- Check for errors: Amazon shows a processing report with errors and warnings. Fix all errors and re-upload.
Tip: Test the Flat File with 2 to 3 products first before uploading hundreds at once. This catches formatting issues early.
When Is the Flat File Worth It?
- When listing 10 or more products at once
- When you regularly add new products
- For variation listings (same product in different sizes or colors)
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Common Mistakes When Creating Listings
1. Wrong Category Selected
The category affects the referral fee, search visibility, and required fields. A wrong category can cause your listing to not appear in search results or incur higher fees.
Solution: Check which category your competitors use. Select the same one.
2. Missing or Invalid EAN/GTIN
Without a valid EAN, Amazon rejects the listing. Used or counterfeit EANs lead to problems up to and including account suspension.
Solution: Only purchase EANs through GS1. Cheap EANs from third-party providers violate Amazon policies.
3. Gated ASIN or Category
Some ASINs and categories require approval (gated categories). If you try to list in a gated category without approval, Amazon blocks the process.
Solution: Check in Seller Central under "Selling Applications" whether you are approved for the category. Apply for approval if needed.
4. Creating a Duplicate Listing
If you create a new listing for a product that already exists, you violate Amazon's policies. Amazon requires all sellers of the same product to share one listing.
Solution: Always search for the ASIN, EAN, or product name first before creating a new listing.
5. Poor or Missing Images
Listings without images rarely get clicked in search results. Images that do not meet Amazon's requirements (no white background, too small) get rejected.
Solution: Invest in professional product photos. Read our product photo guide for details.
6. Title Too Long or Too Short
A title that is too short wastes SEO potential. A title that is too long gets cut off in search results and looks cluttered.
Solution: Aim for 80 to 150 characters. Put the most important keywords in the first 80 characters, because mobile devices cut off the rest.
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After the Listing: Optimize Price with a Repricer
Your listing is live. What now? If you matched an existing listing (arbitrage or wholesale), the price competition with other sellers starts immediately. Your price largely determines your Buy Box chance.
Manual price adjustments work for one product. With 50 or 100 products, it is no longer feasible. An automated repricer takes over: it monitors competitor prices and adjusts yours in real time, following your rules, within your minimum and maximum prices.
arbytrage.io does exactly that. For 40 EUR per month, you get a repricer that works around the clock and maximizes your Buy Box share. Try it free for 14 days and see the difference in your sales numbers.
Also read our beginner's guide to repricers if you have never used one before.
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Frequently Asked Questions (FAQ)
How long until my listing is active?
When matching an existing listing, your offer is usually visible within 15 minutes. For new listings, it can take 24 to 48 hours for Amazon to review and activate the listing.
Can I change a listing after it is created?
Yes, you can edit the title, bullet points, description, and images at any time. However, if you are on an existing listing and you are not the brand owner, Amazon has the final say. Changes must be approved by Amazon and can be overwritten.
Do I need a separate listing for each variant?
No. For variants (e.g., different colors or sizes of the same product), you create a parent listing with child variants. All variants then appear on a single product page, and reviews are aggregated.
Does it cost anything to create a listing?
Creating a listing is free. Costs arise only when you sell (referral fee, FBA fees if applicable) or if you are on the Individual selling plan (0.99 USD per sale instead of 39.99 USD monthly).
My listing was rejected. What should I do?
Check the rejection reason in Seller Central under "Manage Inventory." Common reasons include missing EAN, gated category, or policy violation in the title or images. Fix the issue and resubmit.
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Conclusion
Creating an Amazon listing is not complicated, but there are enough pitfalls to slow down beginners. The most important principle: always search for the existing listing before creating a new one. For arbitrage and wholesale sellers, matching is the norm. Only private label sellers actually create new listings.
Once your listing is live, price optimization begins. Start now with arbytrage.io -- 14-day free trial, no credit card required.