Basic Workflow
When the NICN, Amount, and Region are available, call the Transaction Fee API to get a Transaction Fee that can be passed thru to the consumer.
When your customer has confirmed the sale (clicks buy) call the Sale API endpoint to mark the transaction as Complete.
graph LR
A(Input NICN, Amount, Region) --> B>TransactionFee API]
B --> C(Order display with Transaction Fee)
C --> D(Order purchase confirmed)
D --> E(Sale API]