Walmart offers the Unlocked Lumia 435 8GB 3.5G HSPA+ Windows 8 Phone in Black, model no. RM-1070, for $28.75. Opt for in-store pickup to dodge the $5.97 shipping fee. That's the lowest price we could find by $6. This GSM unlocked phone features a 5" 480x800 touchscreen LCD, Qualcomm Snapdragon 200 1.2GHz dual-core processor, 1GB RAM, 8GB storage, 0.3-megapixel front-facing camera, 2-megapixel rear camera, 802.11n wireless, Bluetooth 4.0, microSDXC card slot, and Windows Phone 8.1 OS.

Update: The price has increased to $32.99.