Google product search (froogle.com) will show you a bunch of prices from various retailers. Just enter "sigma 30mm 1.4" (without the quotation marks) as your search terms. Just stick with known & trusted retailers, like B&H, adorama, amazon, buy, buydig, beachcamera, ritzcamera, etc.. If you're unsurre about a particular retailer, check out their seller ratings, but, even then, use a critical eye. It's not unheard of for companies to pad their positive ratings with fake reviews.
I second the importance of using a reliable site - such as www.reselleratings.com -to check customer feedback and ratings.
Thanks for the Adorama Camera recommendation; don't hesitate to email me directly if you ever need after-sales support or advice: helen.oster@adoramacamera.com
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