Amazon Price Tracker like Keepa but Free

{
    "action": {
        "default_icon": "icon.png"
    },
    "content_scripts": [
        {
            "js": [
                "comparateurPourAmazon.js"
            ],
            "matches": [
                "*:\/\/*.amazon.ae\/*",
                "*:\/\/*.amazon.at\/*",
                "*:\/\/*.amazon.ca\/*",
                "*:\/\/*.amazon.cn\/*",
                "*:\/\/*.amazon.co.jp\/*",
                "*:\/\/*.amazon.co.uk\/*",
                "*:\/\/*.amazon.com.au\/*",
                "*:\/\/*.amazon.com.br\/*",
                "*:\/\/*.amazon.com.mx\/*",
                "*:\/\/*.amazon.com.sg\/*",
                "*:\/\/*.amazon.com.tr\/*",
                "*:\/\/*.amazon.com\/*",
                "*:\/\/*.amazon.de\/*",
                "*:\/\/*.amazon.es\/*",
                "*:\/\/*.amazon.fr\/*",
                "*:\/\/*.amazon.ie\/*",
                "*:\/\/*.amazon.in\/*",
                "*:\/\/*.amazon.it\/*",
                "*:\/\/*.amazon.nl\/*",
                "*:\/\/*.amazon.eg\/*",
                "*:\/\/*.amazon.sa\/*"
            ]
        }
    ],
    "description": "See & track the historical price of any item on Amazon.",
    "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjT5pdE5Ntcoo9gOdI0xBhonzNXPiT8XNxGKY79fk2Pp83g60Y25UxZQhcAQK+FnwgiqdL7mGy4dcWcshIKU9rRaMAQg7OdxdnGADa0V0Q\/HdkbNo4RsITv7oBSot+YP3dI0TZkG6jAEPxP8r26JKJp+oAPLcbs3Un3SZSDFTqQXZZYXaVyEhf8KYQ2b6cv3m3KtN0t1ZzyrHGBQ7sWFyKxgafYDuozG6PgHRN2+oAWjgi+QrsR54Vw4TxCKDRLKNQbkJTPcnsLcBBYZpEUhR+5yZe6u22M0eYRgY0T2V8D9Igr5fNAbVEEP1myGvg+4qliMiWI4n9u5cYTbBMmmTAQIDAQAB",
    "manifest_version": 3,
    "name": "Amazon Price Tracker like Keepa but Free",
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "version": "1.1.4"
}