Been trying for a straight trade with no luck so how about an outright sale. Lens comes with all stuff as new. Performs perfectly, no issues. From Sigma:Fast Maximum Aperture of f/2.8 Optical Image Stabilization Quiet, High-Speed Auto-focus Inner Focusing and Inner Zooming System SLD Glass Elements Reduce Aberrations Looking for $800 or will consider trade plus cash. Shipping and fees can be discussed.