Agree with every part of this.

Some of the smaller electricians will do it if they're not busy (it's an easy $150) that day, and in the neighborhood. But nobody is going out of their way for 15 minutes of work. The travel time/parking will eat too much of the profit.

IIRC it's 3 wire... black/white are your usual power (120V ac) and there's a red or blue that's for the communication. It's really that simple.