Sigma USA authorized dealer BuyDig via eBay currently has two super hot deals on Sigma lenses for Canon EF mount. Both are lowest price online ever from Sigma USA authorized dealers.
Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens + Free USB Dock – $679.00 – at BuyDig via eBay.com
Sigma 18-35mm f/1.8 DC HSM Art Lens + Free USB Dock – $649.00 – at BuyDig via eBay.com