bar-none.js

// ==UserScript==
// @name         New Userscript
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://barnoneauction.hibid.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    setTimeout(() => {
    const prices = document.querySelectorAll('.lot-high-bid, .lot-price-realized');
    [...prices].forEach(price => {
      const cleanPrice = +price.textContent.replace('USD', '').replace(',', '').trim();
      const feePercent = cleanPrice > 1500 ? 12 : 17;
      const fee = (feePercent / 100 * cleanPrice);
      const total = cleanPrice + fee;
      price.textContent = `${cleanPrice.toFixed(2)} + ${fee.toFixed(2)} = ${total.toFixed(2)}`;
    });
    }, 1500);
    /*const exportBtn = document.querySelector('.navbar-text.btn-toolbar.m-b-0.m-t');
    exportBtn.insertAdjacentHTML('beforeend', '<button class="js-export btn btn-default btn-sm">Export</button>');
    document.querySelector('.js-export').addEventListener('click', () => {
        const lotList = document.getElementById('lot-list');
        const carList = lotList.querySelectorAll('tbody tr');
        let exportData = [];
        [].forEach.call(carList, (lot) => {
          if(!lot.classList.contains('group')) {
            const lotLink = lot.querySelector('.inline-lot-number-lead');
            const lotTitle = lotLink.textContent;
            const carLink = lotLink.href;
            const saleDate = lot.querySelector('.lot-date-sold').textContent;
            const saleStatus = lot.querySelector('.lot-price-realized').textContent;
            const salebid = lot.querySelector('.lot-bid-max').textContent;
            const bidStatus = lot.querySelector('.lot-status').textContent;
            exportData.push([lotTitle, carLink, saleDate, saleStatus, salebid, bidStatus]);
          }
        });
        console.log(JSON.stringify(exportData));
    });*/
})();