Payment processing varies because of your jurisdiction and the values vary depending on the course you are taking and the number of people.
The easiest way to make payment correctly, is to navigate in this website, to the page with the course you want to take.
Scroll down that page until you find the payment guidance for that course, with a choice of:-
UK with VAT
EU with RCM
EU with VAT
and NO VAT
click on payment option that is appropriate for you. This will take you to the correct payment processing page.
If you need help, please make contact with an e-mail to training at axeten dot com