I have checked the prices for the SIGMA 10-20mm F4-5.6 EX DC HSM from various sources and this is what i came up with. (NIKON Mount) Japan : 630USD Singappore : 580USD Dubai: 536USD Ebay : ~440USD There is a huge variation when you look at it in percentages.I live in Dubai,so If i order from ebay i need to pay tax and international shipping, adding to it the wait period for deliver.. well not worth it. On the other hand, as you probably heard by now, they released the Sigma 10-20mm f3.5 very recently. I haven't been able to find any information about the price yet. Anybody has any clue what the price range of the Sigma 10-20mm f3.5 would be? I know its rather optimistic but i would rather wait for the new release if there is not a very big gap between them. Would appreciate any feedback i can get. thanks Sem.