Chuck it is glass. I am making one now. It takes about 40 hours to make one what is your time worth? I have sold them in the pass for 400 to 500 bucks but I have to much to do now and it will be about the same as any other tall tail you can buy 600 +. and 6 to 8 weeks to get it.
I no longer have this gyro but the 60 hours of flying it was great. It was easy to control on the gound and in the air. I had a power out dead stick landing and the rudder was working good just as it did with the motor on. I did a 180 back to make the landing. I had to do the same with a two place with the same type tail. You have less work with the rudder on takeoff and I made crosswind landings up to 15 MPH without to much trouble. I don't think I would like flying anyother tail now but I will have to with my tractor gyro coming soon.
I have no idea to the answer to your question. I never flew "DaScrew-Driver" with anyother tail. She flys great and rock steady. My tail is the afore mentioned "Little Wing" tail by Ron Herron that GyroMike posted about.
I never bought the tail from Ken Brock Manufacturing because it didn't have a horizontal other than the "Rock Guard."
As far as mounting, was easy. Two bolt throught the keel at the trailing edge of the fin. One bolt under the keel at the leading edge of the keel.
As far as pricing, you'd have to talk with Ron Herron.