It seems unlikely that Comcast's 2GB/s service in Atlanta will be anywhere near $400.
> Comcast hasn’t discussed pricing for its new service. The company’s XFINITY Extreme 505 service costs $399.95 per month and offers speeds of about half a gigabit. However, competition from Google Fiber, which is planned to expand into Atlanta, may drive down prices in some areas. We’ve already seen this from AT&T, which offers gigabit fiber connections for $70 a month in Austin, Texas, where it competes with Google Fiber, but $110 in Cupertino, where it doesn’t.[1]
> Comcast hasn’t discussed pricing for its new service. The company’s XFINITY Extreme 505 service costs $399.95 per month and offers speeds of about half a gigabit. However, competition from Google Fiber, which is planned to expand into Atlanta, may drive down prices in some areas. We’ve already seen this from AT&T, which offers gigabit fiber connections for $70 a month in Austin, Texas, where it competes with Google Fiber, but $110 in Cupertino, where it doesn’t.[1]
1. http://www.wired.com/2015/04/comcast-says-itll-bring-ultra-f...