The balance, settled when she arrives
The balance is the second half of the fee, paid at the door when she arrives, at the figure agreed in the thread, in euros or a currency confirmed in writing.
A booking made from home is paid in two halves. The first half travels ahead as the deposit. The second, the balance, is paid on arrival in Amsterdam, at the door, at the start of the evening.
A figure fixed weeks earlier
The balance is not recalculated on the night. It is the figure agreed in the thread, less the deposit already sent. A two hour booking confirmed with half from home leaves exactly the other half for the door, and the thread says so in writing before she sets out. Nothing is added for the day of the week, the hour, or the journey inside central Amsterdam, and every figure includes all taxes.
How it is paid
Cash in euros is the plain route. Cash in another major currency is accepted as well, on one condition: the exact sum in that currency must have been confirmed to the guest in writing before she set out. A traveller who lands without euros can therefore bring the balance from home, provided the figure in his own currency was agreed in the thread first. Having it counted out and within reach before she knocks keeps the start of the evening easy.
Changes to the balance
If the length changes on the same evening, the balance changes with it. A longer session adds its half to the deposit, so the balance rises by the other half. A shorter one simply reduces the balance. A change from one therapist to two, or from one guest to two, moves the booking to another row of the rate table, and the thread states the new balance before anything else happens.
When there is no balance
A returning guest's same-day hour or two at a city address carries no deposit, so the whole fee is the balance and is paid on arrival. For a traveller planning from home, that case arises only on a later trip, once he is already in Amsterdam. The deposit entry explains the first half, and the terms hold the full wording on payment.