There's a reason that we who are serviced by Cox have established the unofficial motto, "Cox sucks."
Pay more here for megabit speeds (no, that's not as in "50 megabit," that's as in "one, on a good day) at prices higher than Google charges for gigabit. And for the "it's all about density" set: that's central Phoenix, which sure has more density than Kansas City.
The speeds keep dropping, and they use "we need to invest in more capacity" as an excuse. The charges go up, but the speeds go down anyway.
The only thing Cox has going for it is that it's not CenturyLink -- which advertises that they'll keep charges from rising, but doesn't tell you that it's because they make the older services stop working so that you have to sign up for the new service at higher prices (plus buy new hardware) even though the speeds are no faster.