Well, let's see, I have not added it up yet so we'll learn together. The Prince LVR listed for over 300 but Princedirect.com guys had one for 165. Then to my surprise, I spent 290 on fittings, custom made hoses, adaptors and couplers. Finally, 72 cents for the power beyond activating plug. Looks like $455.72. Now, there are a couple of options you may not want. I "T"d into one of the two spools and have couplers both in the back and in the front for that spool. The other spool has the couplers there on rear only. The ones in the front are routed to the lower right where the existing stock loader couplers are, and I put couplers there. Then, 10 foot hoses with more couplers are routed all the way to the loader cross-member (heavy pipe near bucket, joins the two loader arms). There is a custom-made bracket there to clamp to the loader cross member and allow the two couplers to mount. Then, 3 foot hoses connect to a cylinder on my hydraulic grapple. Finally, as part of the prices listed above, I got hoses, fittings, and couplers for the top link cylinder. No cylinders were part of these costs, but all the other parts to do the above were what added up to 455. I built the mounting bracket for the LVR valve, and had to buy some longer bolts (oops, add another $4) to put the valve mounting bracket down on top of the ROPS bracket, and run longer bolts through it all.
It is surprising how fast the fittings add up in cost. But I had a lot of stuff so it is worth it. The custom-made hoses allow you to do a real clean job. I have seen some photos of the johndeere solution for the 4th and 5th SCV on a 4400, somewhere on the TBN, and I guess I prefer my own solution, much more compact and no hoses routing and drooping all over the 3-point area and pto area.