Bob_A wrote:
You can get a brand new copy with the hood accessory from B&H (delivered) for about $350. I suppose if you knew the seller and saw that the condition of the lens is like new $300 isn't bad ... particularly if it still has some time left on its warranty.
"New" really is its own reward, though. You are sure it has NOT been dropped... it's clean... it's warrantied, without a doubt... and most of all, it is returnable.
That's worth the little extra you pay for it, in my estimation. Now, if the used lens was priced at $225... then, I'd probably feel a bit different... but for the flippin' $50... I think not. That's not "deal-enough" for taking the chance. 