add above red text after every "element.price" in below text (not tested)
if (ea_settings['currency.before'] == '1') {
$option.text(element.name + ' - ' + next_element.data('currency') + element.price);
} else {
$option.text(element.name + ' - ' + element.price + next_element.data('currency'));
}
$option.data('price', element.price);
}