We cannot accept USD payments as an equivalent to GBP payments due to unstable exchange rates.
GBP – select this option if you would like to pay from your Payoneer GBP balance (free) or credit card (3%)
EUR – select this option if you would like to pay by local bank transfer (free), credit card (3%) or your Payoneer EUR balance (free)
PayPal – 4%
For USD use this payment button
For GBP use this payment button