Based on recommendations from colleagues, went to check out a shopping centre near Shanghai's main railway station that has only mobile phone shops. Its located at the junction of Meiyuan rd and tianmu rd. Just across the road from Pacific Dept Store and Xinmei East Hotel. The place has a name but too bad its in Chinese so it is as good as 'the building' to me. Prices here are cheaper than elsewhere in Shanghai where I have compared, using Nokia N82 as my control phone. Its May 2008 and cheapest for the new Black version is 3050 rmb and I'm fairly confident to hit 3000 rmb cash price. This place is an insane 5-6 floors of identical phone shops. And I think 10% of all prepaid cards are here too, judging from the stock each shop holds.