I see a PT fortnightly at the moment (ish, dependent on schedules). I've been seeing the same PT for about 4 or 5 years now, my aim initially was to get a bit fitter, and now my aim is to maintain - knowing I'm seeing him regularly keeps me doing the right stuff in between sessions (otherwise my sessions really, really hurt! And they'd not be as useful if that was all I was doing).
So we start with a bit of a warm up - a quick jaunt on the cross trainer and some dynamic stretches, then it could be anything after that - I tend to do circuits of 3-4 exercises using various equipment or body weight, 3-4 times each, then he'll set me the next lot. At the end of each exercise, I'm generally struggling to complete the set, and by the end of our 3/4 circuits, my muscles that have been targetted are shaking.
I tend to ache the next couple of days (especially if I've not seen him for a while - ouch!).
Some examples of exercises we do:
planks
kettlebell stuff - swings, deadlifts
dumbbell stuff - squats, lunges, presses
bodyweight - press-ups, tricep dips, shoulder taps, abs stuff
weights machine - I'm a bit rubbish on the names of these - these are the ones I can't replicate at home, and they generally work my arms quite hard.
We tend to finish off with some abs stuff and a short stretch off - an hour in total. I pay £300 for 10 sessions.
Anything else you'd like to know?