AT&T Microsoft Lumia 640 Windows phone is on sale at Best Buy for $29.99, a savings of $50. Solid deal. Shipping is not free, but will set you back only $6.

It’s a 4G LTE phone with 8 gigs of internal memory, 1.2 ghz processing speed, 5 inch screen, and is a Windows phone (so make sure you like Windows phones before purchasing).

This phone is sold out at AT&T’s site, so it will probably sell out pretty quick on Best Buy’s. $30 for this phone is pretty good and worth taking a look at if you like Windows phones and are considering AT&T GoPhone’s prepaid service.