I have been using real ear measurement (REM) for over twenty years, and I would argue that REM saves both time and money. Without using REM, the fitting process would be guesswork trying to determine the proper fitting parameters. REM takes the guesswork out of the fitting and at the same time verifies accuracy. REM almost entirely eliminates future troubleshooting problems and it assures both the patient and the doctor that the instruments are properly fit.
The very essence of proper hearing instrument fitting is based on a reliable hearing test evaluation and proper fitting protocols that include real ear measurements (REM).