Nokia Lumia 520 can be purchased now in USA for $29 through the Microsoft online store. It is also listed in the eBay with same price.
3G smartphone Nokia Lumia 520 is powered by a Qualcomm Snapdragon S4 dual-core 1 GHz and 512MB of RAM. It has 8GB of internal storage, 4 inches WVGA (800 x 480 pixels) touchscreen display, 1430 mAh battery, 5 MP auto focus with two-stage capture key, .
It measures 2.52 x 4.72 x 0.38 in (64 x 119.9 x 9.9 mm) (LxWxH) and weight is 4.37 oz (124 g).