I think it’s worth it to spend an extra few bucks to have access to something like a Retul or Guru Fit, where the fitter can make micro adjustments without making you get off the bike.
Also, it helps if you’ve already spent a good amount on an indoor trainer. I’m guessing you have, since you’re posting on the TR forum. Many years ago when I last got fitted, I hadn’t spent much time riding indoors, so when the fitter asked me how things felt, all I could think was that everything felt terrible.