Card processing fee. A 1.7% + A$0.30 surcharge applies to all card payments, reflecting Stripe’s standard rate for Australian-issued cards. International cards are charged at a higher rate by Stripe (currently 3.5% + A$0.30). The difference is absorbed by Iwaki Pumps Australia.
References:
Card surcharges (Consumer) | ACCC
Card surcharges (Business) | ACCC