>2. Are there people who make custom cables like that for very
>(very) low prices in quantities of 100 or less? So far the people
>I've talked to didn't want to talk after they hear that quantity.

Talk to your local disabled workers workshop. If you provide the tools you 
can probably get exactly what you want at pretty reasonable price. I have 
mentioned before, the company I did my apprenticeship with used an 
intellectually disabled persons workshop to wind toroids we used in power 
converters. These were done 100 at a time, and several batches were made 
over a number of years. It is mind numbing work for the likes of you and me, 
but for them it gave a useful income stream, and they felt they were doing 
useful work, which raises their morale. 

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