Rang them today and got a quote,£800-850 approx.The fitting kit that you`ll need is stainless steel when working with DI water,they normally use mild steel or copper but for this use it`s a no no of course.They also do a fitting from hosereel to hose which acts the same as a reducer for using mini-micrbore,they did recommend that it had it`s own split charged leisure battery for the reel on it`s own as the drain is to much to run the reel and other things off of just the 1.I`ll go into it later but the spring rewind reel is a no no for what we use it for,you have to reel all your hose out in a pile before you can walk with it.