Best Buy offers the LG Optimus F6 4G No-Contract Android Phone for MetroPCS in Black for $79.99 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find for this phone by $20, outside of the price below. (We saw it for $11 less in September.) It features a 4.5" 960x540 touchscreen LCD, 1.2GHz dual-core processor, 4GB internal memory, 5-megapixel rear camera, 1.3-megapixel front-facing camera, 720p video recording, 802.11n wireless, Bluetooth 4.0, microSD card slot, and Android OS 4.1.2 (Jelly Bean).
Of note, if you live near a MetroPCS store you can buy it in-store for $49 after rebate.