AliExpress GST Modifier (Australia)

gistfile1.js

// ==UserScript==
// @name         GST in Australia
// @namespace    http://tampermonkey.net/aliexpress-gst
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.aliexpress.com/*
// @icon         https://www.google.com/s2/favicons?domain=aliexpress.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    let elsByClassName = (cls) => [...document.getElementsByClassName(cls)];

    window.addEventListener('load', function() {
        setTimeout(function() {
            const selectors = [
                ...elsByClassName("product-price-value"),
                ...elsByClassName("simple-card-price"),
                ...elsByClassName("price-current"),
                ...document.querySelectorAll(".product-shipping-price .bold")
            ]

            selectors.forEach(e => {
                let changedText = e.innerText
                    .replace(
                        /\$(\d+(?:\.\d{1,2})?)/g,
                        (_, capture) => `$${(Number(capture)*1.1).toFixed(2)}`
                    )
                    .replace(
                        /(\$\d+(?:\.\d{1,2}) - )\d+(?:\.\d{1,2})?/g,
                        (match, capture) => `${capture}${(Number(match.slice(capture.length))*1.1).toFixed(2)}`
                    )

                if (changedText != e.innerText) {
                    console.log("Changing text for", e, "from", e.innerText, "to", changedText);
                    e.innerText = changedText;
                }
            })
        }, 1000)
    })
})();