$400 includes shipping & paypal fees to Canada or US (ie you're really paying more like $365). Not a mark on the optics, and the barrel is in near perfect shape too. This goes for $499 at B&H so $100 off (plus free shipping) is a nice savings. Includes original box & OEM caps (I'll give up a canon rear cap, which I prefer, because its more textured and therefore less easy to drop when you're changing lenses). One of the best features of this lens is its relatively low barrel distortion compared to the other ultra-wides - straight lines stay very straight. I bought it over the Canon 10-22 and the Sigma because of this fact. I love this lens, but I'm selling it to fund the purchase of a 5D (after which I won't need it - the 17-40L will cover ultra wide nicely for me). Pictures on request (haven't photographed it yet). Might also sell my beloved dRebel XT soon, though I'm not giving it up until I have the 5D in hand (can't go without a dSLR).