Today we are announcing the ability for customers to return Savings Plans within 7 days of purchase. Savings Plans is a flexible pricing model that can help you reduce your bill by up to 72% compared to On-Demand prices, in exchange for a one- or three-year hourly spend commitment. Starting today, if you realize that the Savings Plan you recently purchased isn’t optimal for your needs, you can return it and if needed, repurchase another Savings Plan that better matches your needs.
Source:: Amazon AWS