Today’s B&H DealZone (one-day deal) features a great deal on the Sigma Sports 70-200mm f/2.8 DG OS HSM for Canon EF, which is $1099 with a free B+W filter and the Sigma USB dock. UPDATE: Free dock has been removed. Adorama has matched with free dock, but no free filter.
They’ve also featuring $100 savings on the Oben CT-3586 Carbon Fiber Tripod and Triple Action BZ-226T Ball Head.
I don’t see free USB dock on Sigma 70-200.
Looks like it was removed after the sale started, unfortunately. Adorama has matched price with a free dock (but no free filter).