Amazon Prime Day is actually a bummer for these sellers

Amazon Prime Day is typically one of the best days of the year for Keababies, which sells baby care and maternity products on its web site.

Last October, Keababies racked up around $500,000 in revenue during the two-day event, said co-founder Ivan Ong. Drawn by the steep discounts Keababies offered to customers on Prime Day, a flood of Amazon shoppers snapped up bibs, baby combs, pillows, baby slings and changing pads. But this year, Ong can't afford to offer as many discounts. The company is facing inventory shortages and fears running out of stock on products on a day with especially high consumer demand. Manufacturing and supply chain costs have also soared, making it harder for Ong to offer deals.