change_setup_fee_text.js

// Just put what you want the setup fee text to be in the PLACE TEXT HERE placeholder

function changeSetupFee() {
  var setupfee = $("#summary-setup-fee .plan__summary-table-row-label");
  var text = setupfee.text().replace('Setup Fee', 'PLACE TEXT HERE');
  setupfee.text(text);
};

$(document).bind("afterSummaryRefresh", changeSetupFee);