More room for pumps. Versus a 36v system.
Gotcha makes sense. I'm no rocket scientist but they don't look very hard to install, especially with using brackets on a jack plate. Bolt the mount on. Bolt the pole on. Run the hoses where your control wires already go through or drill 2 little holes. Mount the pump. Cut the hoses to length needed, slide the nut and pinch ring on and tighten to their respective ports. Then run the wires to a good 12 volt source. Cycle the pumps after you fill them with oil to bleed them. I don't think I could justify spending 200$ for that.