The ladder of lengths, and how an evening picks one
Lengths run one hour, ninety minutes, two hours and three, with each further hour added at the same rate, and two guest figures double the single ones.
The ladder is short on purpose. One hour, ninety minutes, two hours, three hours, and then an hour at a time after that. Each rung is priced in exact proportion to its length, three hours costing three times the first, and the whole ladder doubles when the two of you take a therapist each.
The rung a weekday can carry
Ninety minutes is the length most couples end up on during a working week, and it is not a compromise. It is long enough for the session to have a beginning and an end rather than a middle only, and short enough to leave the working partner asleep before midnight. Two hours suits the evening with nothing printed after it.
Length against shape
With one therapist between the two of you, the elapsed time is shared: she works with one of you while the other stays close. With a therapist each, the sessions run side by side and the same amount of evening fits into half the clock. A couple with an early start often buys back an hour by changing the shape rather than cutting the length.
Deciding before rather than during
Write the length into the thread. A session that stops early stays payable for the time reserved, so a length agreed in advance is simply the booking, while a length abandoned halfway is a cancellation with a fee attached. The page on an early meeting works through how to choose against an alarm.