The valve was $32.40, the custom hoses about $75 (you could probably go cheaper), 2 "T" fittings are $15 ea. The flat faced couplers were $170 for two pairs of couplers. A little over $300 for this setup. Worth every penny to me. The couplers had a nice benefit of having very little fluid loss when decoupling and easy to wipe clean. Also, it has an accidental release protection built in. To release, the collar has to line up with the indentation on the backside.
The major factor was the lack of a particular T fitting that I was looking for but didn't exist. The one I got has #10 JIC on each end and a #8 ORB on the side port that connects to the valve. If they'd make one end a NPT, the overall cost would have plummeted to approx $140 since I'd be able to reuse the couplers. It's important to know that the JIC & ORB allows fixed mounting position whereas the NPT doesn't. This wouldn't matter on the coupler ends. I could use adapters but this would have made the assembly too wide and I wanted it tight between the 3PH arms.