curl --request GET \
  --url https://api.bullring.finance/v1/banking/withdrawal/fee \
  --header 'x-api-key: <api-key>'

{
  "amount": 1.01,
  "currency": "USD",
  "percentage": 0.007,
  "flatFee": 1,
  "originalAmount": 0.99,
  "netAmount": 1,
  "grossAmount": 2
}