I used to do a lot of day work. There are at least two dozen trunk slammers in my old neighborhood that hire extra help as needed, and certain day laborers got reputations as being very good at certain tasks. This helped the trunk slammer keep labor costs low- they could hire one tool carrier slash gofer at about $400 a week while keeping standards high. If you need a guy who was really, really good at doing telephone jacks quickly or focusing lenses or putting a DVR online, you could hire that guy for the day and get the job done as quick as possible without worrying about the quality of the work (trunk slammers used to get all their work from word-of-mouth exclusively, screw up too many jobs and you're out of business). Going rate in early-to-mid 2000s was $125 to $185 a day, depending on working conditions and travel distance, in cash.
My specialty used to be fishing wires in old construction.
I got phone calls on more than one occasion like this, and here's what I figure (all labor costs are ten years old, I assume everything is more expensive now).
In my prime, it would take not less than a day and (probably) not more than three days to run all the wires (I haven't fished a wire in years, so no doubt it would take me longer now), if I have a gopher to help. That's up to $735 in labor costs, not including parts (spackle, screws, tape), gas, wear and tear on tools, and of course profit, and assuming the trunk slammer is going to put the DVR online himself while his gys run around playing with drills and wires and so forth. So, say... $1,200? Assuming you're really, really, reeeeeeeally slow and have no other work whatsoever, otherwise the time is probably better spent doing something more profitable, like collecting empty soda cans or checking pay phones for spare change.
Like I said, all these labor costs are based on ten year old pay scales, so say about $1,600, maybe $1,750 at a guess. And, again, that's when you've been dead for weeks and your $400 a week gopher has sharpened all the drill bits and swept out the shop and rearranged the screwdrivers by length.
$2,000 absolutely sounds like a fair price if you're giving up more profitable jobs, as Jon Dillabaugh points out above. It might even be the friends and family rate.
$675 sounds like a guy doing a side job after work, by himself, for extra cash, without enough experience to understand exactly how long this is going to take him and what he's getting himself into.