Nokia Lumia 521 Windows Phone 8 on sale today only for $84.95. The Lumia 521's list price is $149.95. It's been on sale before but this is the best price I've seen on this phone.
The sale Lumia is only available at this price by ordering online at bestbuy.com for in-store pickup. Availability seems quite good. I just checked in the San Francisco area and 8 out of the 10 stores within 50 miles had the phone in-stock.
Even at full price the Lumia is an excellent value. It has a 4 inch 480 x 800 px screen that's very bright and sharp. There's a dual-core 1 Ghz processor and 512 MP of RAM so performance should be good. The 5 MP camera supports 720p HD video recording and there's a removable battery and support for memory cards up to 64 GB.
The Lumia comes with Nokia Here Maps which offers turn by turn driving directions and works offline using maps stored on the SD card. That means that maps and drive navigation work without using data, ideal if you use the phone on T-Mobile's data-less pay as you go or PTel's pay by the MB PAYGO plan. Also included is Nokia Music for unlimited free mix radio.
Here are the Lumia's specs:
Display: 4" 800x480px touchscreen display
8GB internal memory (expandable up to 64GB with optional microSD card, sold separately)
Camera: 5MP with 720p HD camcorder
Operating System: Windows Phone 8
Network: GSM (2G) - 850/900/1800/1900; HSPA+ 21 (3G) - Band II (1900), Band IV (1700/2100/AWS), Band V (850),
Wi-Fi: 802.11 b/g/n
Bluetooth: A2DP (stereo Bluetooth), T-Mobile Autopairing, HFP 1.5, AVRCP, PBAP, OPP
Dimensions: 2.55 x 0.48 x 4.88 inches (65 x 12 x 124 mm)
Weight: 4.48 oz. (127 gm)
Battery: 1430 mAh, Talk Time - Up to 9 hours, Standby Time - Up to 330 hours