F.I.S.T. Fitting

So I think i really lucked out here in finding a LBS that really takes care of me.
Long story short-a regular of the LBS bought a new tri-bike, but wanted to keep his old aerobars and was selling the new ones that came with the tri-bike. PD t2's.
I happen to call the same day this happened and BOOM-theyre mine for 40 bucks!!!!!!!!!!!
but thats not the point of this thread.
I am also going to be getting a FIST fitting since im getting the aero's, and I am being charged 100 buckaroo's for it. being new to all this stuff and still learning is this a solid price for fitting? i would assume it is and it is for a COMPLETE fitting (including cleat alingment)
they want me to drop the bike off the night before so they can pre-install the aero's on my bike then have me show up in my shorts etc..... they said it'll take about two hours and i may need a seatpost as well depending.
So does this sound money to everyone else?
also have people seen a noticeable difference after getting FIST fit?
im really excited so i hope this all sounds good.
Thanks!