bolivares y usd en exito.com

exito.js

// ==UserScript==
// @name         Exito Price
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  bolivares y dolares en exito.com
// @author       gerswin
// @require http://code.jquery.com/jquery-latest.js
// @match        http://www.exito.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    function formatCurrency(num) {
        num = num.toString().replace(/\$|\,/g, '');
        if (isNaN(num)) num = "0";
        var sign = (num == (num = Math.abs(num)));
        num = Math.floor(num * 100 + 0.50000000001);
        var cents = num % 100;
        num = Math.floor(num / 100).toString();
        if (cents < 10) cents = "0" + cents;
        for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++)
            num = num.substring(0, num.length - (4 * i + 3)) + '.' + num.substring(num.length - (4 * i + 3));
        return (((sign) ? '' : '-') + num + ',' + cents);
    }
    if (localStorage.getItem("lastcheck") === null) {
        localStorage["lastcheck"] = Math.floor(Date.now() / 1000);
        $.getJSON( "https://s3.amazonaws.com/dolartoday/data.json", function( data ) {
            localStorage["usdata"] = JSON.stringify(data);
        });
    }

    var lastCheck = localStorage.getItem("lastcheck");
    var valores;
    function setPrice(valores){
        $( ".price" ).each(function( index ) {
            var precio = $( this ).text().match(/\d+/g).join([]);
            var bolivar =formatCurrency(precio / valores.COL.compra);
            var usd= formatCurrency(precio / valores.USDCOL.ratetrm);
            $(this).parent().append('<h6 class="price">'+bolivar+' BsF</h6>');
            $(this).parent().append('<h6 class="price">'+usd+' USD</h6>');
        });

        $(".otherMedia").find("span").each(function( index ) {
            var precio = $( this ).text().match(/\d+/g).join([]);
            var bolivar =formatCurrency(precio / valores.COL.compra);
            var usd= formatCurrency(precio / valores.USDCOL.ratetrm);
            $(this).parent().parent().append('<h6 class="price">'+bolivar+' BsF</h6>');
            $(this).parent().parent().append('<h6 class="price">'+usd+' USD</h6>');

        });
    }
    if (Math.floor(Date.now() / 1000) - lastCheck > 3600)
    {
        $.getJSON( "https://s3.amazonaws.com/dolartoday/data.json", function( data ) {
            setPrice(data);
            localStorage["usdata"] = JSON.stringify(data);
        });
    }else{
        setPrice(JSON.parse(localStorage.getItem("usdata")));
    }
})();