Tamron USA authorized dealer BuyDig has an open box deal on Tamron SP 150-600mm f/5-6.3 Di VC USD lens for Canon EF mount.
Open Box Tamron SP 150-600mm f/5-6.3 Di VC USD lens for Canon EF mount – $949.00 – after use coupon code (CLEAROUT20) when checkout – final price is $795.20 – at BuyDig.com
Regular price for this lens is $999 in most US stores (Amazon, B&H, Adorama)