The duration ladder is the single price list behind every portrait: the fee depends on how long you book and how many women come, never on which woman.
Galleries often print their price list on a separate sheet. On this site that sheet is kept deliberately short, because very few things move the figure. The rate does not change with the woman chosen, the technique written in the message, the district of the hotel or the time on the clock. It changes with length and with headcount, and with nothing else.
The ladder shows the whole fee. Whether half of that fee is sent in advance depends on the booking, and some rungs always carry it. Three hours or more always do, so a three-hour evening with Liana is EUR 540 with EUR 270 confirmed ahead. Every pair and every night does as well. The shorter rungs carry it when the booking is a guest's first, is made more than a day ahead, falls on a peak date, goes to the airport or forms part of a companion format: two hours with Molly arranged for tomorrow costs EUR 360, half of which clears before she leaves.
Guests new to body-to-body most often begin with an hour or with ninety minutes, and regulars drift toward two hours once they know which woman they like. The journal piece on one hour or two weighs that step up. The full card, with the deposit for each line, is on the prices page, and how long to book takes the question further.