Today only, and with just 14h or less remaining on the deal, Amazon is offering the Nokia Lumia 520 for $19.99. The model is a GSM AT&T based phone, which means any AT&T MVNO can be used with it. Although the phone is on the low end in terms of specifications, it is at a price that is hard to beat, and in fact is a great entry point at that price for those of you still hanging onto flip hones. The phone features a 4 inch display, 5 MP camera but only 8 MB of storage (expandable with a microSD card) with 512 MB of ram. The phone is powered by a dual core 1 GHz Snapdragon S4 with a 1430 mAh battery.