Amazon Business Just Hit $25 Billion in Annual Sales In less than 6 years, the B2B e-commerce marketplace has grown sales to more than twice the size of Grainger. Mar 16th, 2021 Amazon Business When AmazonSupply first launched in 2012, it was anyone's guess as far as what impact the operation would have on the greater B2B supply market. The same could be said when it rebranded and relaunched in April 2015 as Amazon Business. But everyone took notice when the B2B marketplace announced in September 2018 that it had already surpassed $10 billion in annual sales. On Monday, Amazon Business provided its first sales figure in two and a half years, and it's a figure that's too big for distributors to ignore.