Confusion when living in the states and buying parts from Australia

Pay by credit card. it is not a supplier you have used before. You don’t have much recourse with sending a wire, if the vendor does not send you the parts. With a credit card, you can get your money back. You will pay a fee of like 10-25 bucks on the CC, a wire depending on the bank is 50-100 bucks. You will also have import duties, most of the time UPS or DHL or the sort will cover the duty and bill you for it.
And brokerage and handling charges. Either way the banks will also give you an unfavourable exchange rate. Ask me how I know