Show ibood prices for expired deals

ibood.js

// ==UserScript==
// @name         ibood old prices
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  add prices to old/expired ibood deals
// @author       You
// @match        https://www.ibood.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

	var script = null;
	console.log('running script');
	$('script').each((i, s) => {script = s.innerHTML; if(script.match(/price: /))return false;});

	var price = script.match(/price: '([^']+)'/)[1] * 1;
	console.log('price', price);
	var discount = eval(script.match(/discount: (.+),/)[1]) * 1;
    console.log('discount', discount);
	// Your code here...

	var title = $('div.summary>h2')[0];
	var old_price = (price / (1 - discount * 0.01)).toFixed(2);
	title.innerHTML += '<br>&euro; ' + price + ' :: ' + discount + '% <s>&euro; ' + old_price + '</s>';
})();