This is certainly “the deal” at the moment for prepaid Lumia 521 in US. Only at $119 at FRYS. As expected it is sold out even before we could report. But good to see increasing reach of Lumia 521 as it has just now come to Amazon and FRYS.
Also, on-contract Lumia 521 is available to book for free at FRYS, which again may be the best deal for on-contract Lumia 521, because at T-Mobile one needs to pay $29 as down payment at time of booking. Also Lumia 521 is currently out of stock at T-Mobile.
Thanks Rogers and Nishy for the Tip. Cheers!!