What is the cheapest and legitimate way to get UPC/barcodes for a product?

You can buy cheapest and legitimate UPC codes from CodesforAmazon.com

It gives cheapest price option with guarantee to list your items at Amazon eBay and website. These are unique and allowed at amazon where most of the time customer had problems. We suggest to create an item at amazon first as some time you don’t have brand registry and someone else already owns the same brand so its not possible to sell anyone’s items with even these codes. otherwise anyone can buy and start selling high class brands products easily.

Finally, its recommended to buy cheap barcodes as it saves money as far your purpose is to sell products and there is no leasing fees for your barcodes. You will have your money back guarantee from given website.