Amazon is offering 10% off of Sigma lenses sold by Amazon (not 3rd party sellers). You can check out the list of available lenses here: Amazon Sigma Sale The sales code is: SIGMADAD Amazon often has excellent prices to begin with, so an additional 10% is nice. If you have Prime, you can get free 2 day shipping as well. I do most of my online shopping since it comes tax and shipping free. It is more convenient than shopping local. I buy most of my camera equipment from eBay, but let me give you another example. I purchase a fair amount of ...