There's a ton of overlap here.<p>3G (or equivalent) on four devices. (And if you have 3G on four devices, there's absolutely no reason to be paying for mobile WiFi hotspots).<p>And then there are five different services for streaming video.<p>And then a land-line phone.<p>If you're paying anywhere close to the $738 they estimate as the maximum it's only because you're not paying any attention to what you're paying for.