This lens is in like new condition. It's a very sharp copy. There's no any focus issues on my 6D. It comes with original box, all accessories, manual, and warranty card.
Price is $840 shipped & paypal'ed. U.S only.
The brand new one is $1,099 at BHPhoto.
Sigma 150mm f/2.8 EX DG OS HSM APO Macro Lens (For Canon) 106101
Thanks for looking.