It is always the price for the whole group:
Experience without actor
2 persons cost 74€
3 persons cost 99€
4 persons cost 109€
5 persons cost 119€
6 persons cost 129€
Experience with actor (possessed)
2 persons cost 84€
3 persons cost 109€
4 persons cost 124€
5 persons cost 139€
6 persons cost 149€