Used Sigma 17-50/2.8 EX DC OS HSM for $219 (Canon) and $224 (Nikon)

Among the cameras participating in the previously mentioned earlier today 20% off Earth Week promotion at Amazon Warehouse Deals is the Sigma 17-50mm f2.8 EX DC OS HSM FLD for $219+ in the aforelinked Canon EF version (“Used – Very Good”) and $224+ (“Used – Good”) in the Nikon system (or $238~ in “Used – Very Good” condition).

This goes for $369 in new condition at authorized dealers such as Adorama.