You underestimate the power of well designed production, and how good people can get at a repetitive task they do all day.
I count about 20 components, about 40 solders. Allowing 5 seconds per bend (using jigs), 5 seconds per solder, one minute for assembly (again using jigs), one minute for finish... I'd say about 7 minutes labour per unit. Jigs, etc, could run to 100 hours all up, they seem very simple.
I'd feel comfortable budgeting 15 mins/unit for runs of 1000+.
I've performed as well as supervised manual circuit board assembly. I know what it's like to get in the zone of doing something like this all day.
My experience teaches me that it takes on average soldering a few dozen units of anything unusual before the assembler gets the hang of it. Unusual being anything besides stuffing a PC board and manually soldering. This is not likely to ever be a high volume product, and I probably (admittedly only knowing the size of the market from what other posters have said) would not be comfortable doing production runs of more than 50 at a time, so you lose a lot of the benefits of doing long runs.
That said, I think your estimates are a bit optimistic. Once the entire time is accounted for: from kitting up the run, setting up the work area, actual assembly and testing, my guess would be closer to 30 minutes per unit.
Slightly OT, but if you can point me to any good resources for setup and manual assembly of cable harnesses, it would be much appreciated. It's an area I find myself getting involved in and I don't have much experience, so it's pretty much "learning by error."
I count about 20 components, about 40 solders. Allowing 5 seconds per bend (using jigs), 5 seconds per solder, one minute for assembly (again using jigs), one minute for finish... I'd say about 7 minutes labour per unit. Jigs, etc, could run to 100 hours all up, they seem very simple.
I'd feel comfortable budgeting 15 mins/unit for runs of 1000+.