Do not book with Webjet. They are a fraudulent operation. I canncelled my wifes ticket 3 weeks prior to the flight and requested the taxes portion of the ticket. Webjet refused. Airlines will refund the tax portion if a flight is not taken as the tax is not paid to goverments until the flight is taken. As a result of Webjet refusing to refund the taxes they can pocket the money as additional profit.
Pay by debit card: All cheap airlines charge customers a payment handling fee, which covers the costs they incur when accepting Credit Card payments. The fee may vary depending on the card circuit (Visa, Mastercard, Amex, Diners, etc) or the card type (Credit Card or Debit Card). Most of the time, if you pay by debit card you will be charged no payment handling fee or you will pay a lower fee than when paying by credit card.