Customers abandon orders when they cannot tell what they are about to be charged. The cart and the total now stay in view from the first item to the payment button.
The Total, Always Visible
Line items and the running total sit alongside checkout on a desktop and collapse into an expandable summary on a phone, so the number is never more than a tap away.
A Preview Before Paying
Before payment, customers see the complete order — services, schedule, address and amount — and can go back to any step to change it.
Alerts Where They Matter
If a chosen time slot is no longer available, the customer is told at the point it happens and prompted to reselect, rather than finding out after paying.