The price includes the basics that you would need to run the machine.
The wireless is really only necessary if you have more than one and want them to speak to one another without a ton if wires hanging around. The unit is still powered from outside the tank, so no wires are in it.
It can create a wave without two powerheads, it is a setting called Reef Wave.
My MP40w is on 3/4" thick glass, no issues.
I have seen the MP60, back in October. It is just a more powerful version of the MP40 from what I could see.