Folks this is just out and is great news as Lumia 521 once again sold similar to the Home Shopping Network and Walmart....
Just Bing the above Title.
Sentiment: Strong Buy
Here is another confirmation as it seems T-Mobile has sold out both pre-paid and stand-alone Lumia 521 handsets....
Just Bing: "Nokia Lumia 521 on T-Mobile sellout proves popularity"
AND the great thing is as the folks with expensive iPhones/Androids reach the end of their contracts, they will pile on the 50% of the cell phones users who want to upgrade to a Smartphone and that is when the real Fun begins....