Your trusted, leading UPC seller
If you are launching a new product on Amazon in 2026, there is a good chance you’ve encountered a sudden, frustrating roadblock. You enter your brand name, you type in your newly purchased UPC code, you click save, and then… …
What is a UPC “Letter of Affiliation”? (And Why Amazon Sellers Need One) Read More »
Need UPC codes for Amazon? Learn where to buy, how much they cost, and how to list products step-by-step. Get GS1 certified codes starting at $10. UPC codes for Amazon are 12-digit product identifiers required to create most product listings …
UPC Codes for Amazon: Complete 2026 Buying Guide Read More »
At UPCs.com, we help thousands of businesses officially launch their products every year. But we know that buying a barcode is just the beginning. As you scale, your brand becomes an asset—and unfortunately, a target. In the current …
The One Step Most New Sellers Forget (Until It’s Too Late) Read More »
Amazon KDP is a fantastic place to start your self-publishing journey. It’s easy, free, and gets your book in front of millions of readers. But eventually, most successful authors want more. You want your book on the shelves of local …
Moving from KDP to IngramSpark: The “Portable” ISBN Advantage Read More »
Congratulations! You’ve successfully published a series of books. Now, you want to maximize your revenue by bundling them together into a “box set” or omnibus edition for your readers. This leads to one of the most common questions we receive …
Box Sets & Bundles: The “One vs. Many” ISBN Rule Read More »
If you are new to self-publishing, the acronyms and terminology can feel overwhelming. Three terms, in particular, often get used interchangeably even though they are completely different things: ISBN, Barcode, and Copyright. A common misconception we hear from authors is, …
ISBN vs. Copyright vs. Barcode: What’s the Difference? Read More »
The Problem: You tried to list a product on Amazon, and you saw “Error 8572: You are using UPCs, EANs, ISBNs, ASINs, or JAN codes that do not match the products you are trying to list.” If you are seeing …
How to Fix Amazon Error 8572 (GTIN Mismatch) Without Paying GS1 Read More »
Before your product can go live on Amazon, you need a valid, unique UPC barcode. At UPCs.com, we’ve helped 50,000+ businesses launch on Amazon and retailer stores worldwide with real, verifiable, GS1-origin UPC barcodes that work across major marketplaces. Buy …
If you’re publishing a book in 2025, you may be wondering whether you need an ISBN, a UPC, or both. While they look similar and both create barcodes, ISBNs and UPCs serve very different purposes. This guide breaks it down …
ISBN vs UPC: Which One Do You Need for Your Book? Read More »
Amazon KDP is one of the easiest ways to publish your book, but ISBN requirements can be confusing—especially with Amazon offering a free option. In this 2025 guide, we’ll break down exactly when you need your own ISBN, when you …
Do You Need an ISBN for Amazon KDP? (Ultimate 2025 Guide) Read More »