On Confirmation step, you can see the list of the commands that will be executed by the selected stack. You can review them and get to the previous step, if you need to change something.

You can also find the estimated price of the resources to be created in the bottom part of the page:

Average - the average monthly price for the VM of a specified configuration.
100% load - the approximate price of a VM running 24/7.
30% load - the approximate price of a VM running during standard working hours.

The estimations are based on the assumption that 100% of the system storage is used. Additional volumes usage is not taken into account

Please note that storage usage can significantly influence the actual price of your resources.