I thought if I clicked the button, maybe it would tell me how much CSC the vintage camera costs, and ask me to confirm my purchase, but it just gave me one, without taking any csc..

NOW it says 500 CSC on the button!? Ummmmm....?

Did you read the news post that says if you have/activate a gold account between now and March 20, you can get a free trunk (but you have to get it from the page)? You probably just redeemed your free trunk