The club I am looking at charges a fixed fee for a winch or aerotow, then about 70p per minute of flight, with the first 30 mins free during winter months.
Aerotow is £35 per launch, so if I had, say, 3 aerotow launches in one day then that's already over £100 and that's before the per minute charge!
Or is it more common to have a mixture of winch/aerotow?