Visit gs1us.org. They recently introduced a "Single GS1 US GTIN" for around $30 with no annual renewal fee, making it much more affordable for small startups than it used to be.
Never just invent a 12-digit number. It won’t scan, and it will cause massive logistical headaches. buy upc codes online
You need a unique UPC for every "SKU." If you sell a shirt in 3 sizes and 2 colors, you need 6 unique UPC codes. Visit gs1us
You’ll need your company name and basic contact details. buy upc codes online
Official GS1 Company Prefixes often require an annual renewal fee to keep the codes active. Single GTINs usually do not.