$ 13 su Monoprice.com

                {
                    "id": "56245044",
                    "title": "Off $ 13",
                    "description": "Monolith 13in THX Certified Ultra 2000-Watt Powered Subwoofer ONLY $1249.99 (Save $450) + Free Shipping",
                    "thumbnail": "../stores/store_4074.w120.h120.jpg",
                    "code": "",
                    "perma": "-13",
                    "store_perma": "monoprice-com",
                    "url": "/go.php?coupon_id=56245044",
                    "store_id": "4074"
                }