I've had this lens for almost 2 years, I haven't used it in 14 months.
Its a wonderful lens, I just found myself never using it.
It is in like-new condition. Not a mark on it anywhere on the body or on the glass, never been subject to baggage handlers.
Was thinking $400 US + shipping.
Oops forgot, it is a Sigma 15mm 2.8 Fish Eye, in case anyone thought it might be something different...