I've done quite a bit of wiring so I would say all three took about 2hrs. I did not have a hot knife so I had to come up with a way to cut the techflex without fraying the ends. I put tape around it and cut through and it worked well. Pushing that stuff on took the longest.
I think I had about 85 bucks to total for all three wires (2 - 15ft and 1 - 10ft) and that is way under what just the pair would go for even on epray. I find this kind of stuff relaxing. I just went down to the room with a scotch, watched the NCAA tourney and put them together. Having decent tools always helps as well.