AWS pricing changes over time (although they are careful not to trap or antagonize customers with changes like this one). You linked to a static blog post that

AWS pricing changes over time (although they are careful not to trap or antagonize customers with changes like this one). You linked to a static blog post that has a price from the past. https://aws.amazon.com/eks/pricing/ https://aws.amazon.com/eks/pricing/ is the up to date page. https://aws.amazon.com/blogs/aws/eks-price-reduction/ https://aws.amazon.com/blogs/aws/eks-price-reduction/ is the announcement of the price cut.