Get data attribute from radio button for on change event with jQuery

gistfile1.txt

jQuery(document).on('change', 'tag or class name', function() {
  // Does some stuff and logs the event to the console 
	var packPrice=jQuery(this).attr("data-price");

   jQuery('span.totalprice').text("$"+packPrice);
});
//onchnage with calculation 
  jQuery(document).on('change', 'input.pbu-package, input.field-element.numberlicenses', function() {
    var packPrice=jQuery('input.pbu-package:checked ').attr("data-price");
    var licenseincrement=jQuery('input.field-element.numberlicenses').val();

   jQuery('span.totalprice').text("$"+packPrice * licenseincrement);
});