The effective monthly price for that t3a.large (excluding storage) can vary from $55 to $25 depending on how much you're willing to commit in advance. See the

The effective monthly price for that t3a.large (excluding storage) can vary from $55 to $25 depending on how much you're willing to commit in advance. See the chart at https://ibb.co/M7nnMvL https://ibb.co/M7nnMvL for some different scenarios.