Posting an ad is, in fact, the same as promoting it, because more people are going to click that ad and some of the forum viewers would be interested in a 300mm f/2.8 lens. Maybe not THIS one, but you never know...On top of that the OP says "no matter it's still sharp" - how do you know that, unless it's your lens? There's no sample picture taken with the lens in this ad, so either the OP is gullible as everybody else or just not coming clean about being the seller. Judging from some of the responses in this thread I fully expect somebody is going to delcare $2300 'cheap' price for such a 'work of art, and still a sharp lens.'