Prime time now, the Sigma 50mm f1.4 DG HSM ART is going for $850 with some extras in the Canon, Nikon, Sony and Sigma SLR mounts. At B&H Photo you get 4% promotional rewards (= $34~), while at Adorama you get a handful of free accessories and a 3-year NewLeaf spills-n-drops warranty. No freebies at the moment at Amazon.
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