Only paid £100 for a new Cluch Radial master cylinder today, well chuffed.
As for the Reservoirs I get mine from Denise Trollope Racing or Harris Performance, usually only around £6 for the small pot.
For the brake lines I come off the Mastercylinder with a single banjo and use a banjo bolt with the built in pressure switch, then I put a T piece in just above the bottom yoke so the brake line running to the left caliper takes a route across the bottom yoke before dropping down. As I only have them on my 998 and 996 sorting the brackets was easy as you can use one of the bolts that holds the clip-on bar in, obviously noy a option on the 999s.
If they are like my Harris clip-ons with the single 6mm pinch bolt clamping the bar from the front then a bracket should be fairly simple and like the ducati bars will probably require a small spacer just to sit in to the recess meant for the bolt head.