Did i get ripped off?

So we had a pinhole leak on the pipe to the left. A plumber came out today and removed the old flex piping and replaced it with hard copper piping. Probably took him 2 hours at most. He tried selling us on this thing called a flowtech water treatment that sends radio frequencies through the pipes. The total quote was $3400. We changed our minds about the flowtech after doing some research and was charged $1100 to do this. Did we get ripped off?