Não há dinheiro na Cultura, mas Tier não faz parte da Cultura.
Dentro da Cultura, o dinheiro não é usado e a maioria dos cidadãos tem amplamente nenhuma concepção de como o dinheiro funciona além de vários truques ensinados às crianças pequenas sobre "dinheiro implicando pobreza' Se você quer algo (dentro da razão), basta solicitar. Se está sendo dado livremente, você pode tê-lo. Se essa pessoa disser que você não pode tê-lo, peça à IA mais próxima para fazer outra para você.
Money is a sign of poverty. This is an old Culture saying I remember
every now and again...
State of the Art: A Gift from the Culture
e
Almost the only aspect of her new life that she adapted to without
pause for thought was the total absence of money in the Culture.
Matter
Tudo isso dito, A camada (onde o erotrupo se baseia) não faz parte da cultura. Pertencia a outra raça e era herdada pelas inteligências artificiais que eles projetavam para administrar a estação. Várias raças estão autorizadas a usar as instalações e algumas mantêm suas embaixadas lá.
Como tal, (não sendo um mundo cultural), o dinheiro ainda é usado para comprar coisas.
This environmental diversity and the civilisational co-dependence it
implied and intermingling it encouraged had been Tier's raison d'être,
the very foundation of its purpose and fame for the seven thousand
years it had existed. Its original builders were, perhaps, unknown;
they were believed to have Sublimed shortly after building it, leaving
behind a species - or model, depending how you defined these things -
of biomechanical sintricate which ran and maintained the place, were
individually dull but collectively highly intelligent, took the shape
of a small sphere covered with long articulated spines, were between
half a metre and two metres in size and had seemed to have an intense
suspicion of anything possessing less of a biological basis than they
did themselves. Drones and other AIs were tolerated on Tier but very
closely watched, followed everywhere and their every communication and
even thought monitored. Minds were immune to this sort of treatment of
course, but their avatars tended to attract a degree of intense
physical observation which bordered on harassment, and so they rarely
bothered entering the world itself, sticking to the outer docks where
they were made perfectly welcome and afforded every hospitality. Tier,
after all, was a statement, a treasure, a symbol, and as such any
small discriminatory foibles it chose to display were considered
perfectly tolerable.