Looking to sell or upgrade your own Sigma 180mm f/2.8 APO Macro EX DG OS HSM, Canon EF Fit?

MODEL OVERVIEW
Sigma 180mm f/2.8 APO Macro EX DG OS HSM, Canon EF Fit

The Sigma 180mm f/2.8 APO Macro EX DG OS HSM Lens (for Canon) is a high-speed macro lens offering a magnification ratio of 1:1 and a focal length of 180mm. This lens is compatible with the Canon EF mount for use on full-frame and APS-C DSLRs.