The official website does not provide a product number query function. Not only Converse, but also AD NIKE.
The bag you bought: 182U312028
It is indeed the original item number. It is a bag that was launched in May 2008
The exclusive price is 198, right.
You bought it at a regular market counter. There won't be any fake ones.
Let you look at this picture and you will feel relieved:
/rurl2=42aa3704fb9a457aab28604fb36773e5eab3ab87bc62a1caf26afe25cafee8eaf2752fa88b1348de089b13d3efc4be70fb742ce028fb fcc67d4f7d778514b722a1b64624037a50863a547fe727ac8d9919700541