public double totalPrice() {
		System.out.println("pris:" + participant.name);
		double days = ChronoUnit.DAYS.between(getArrivalDate(), getDepartureDate().plusDays(1));
		double price = 0;
		if (!participant.isLecturer()) {
			price = (conference.getPrice() * days);
		}
		System.out.println("pris efter foredragsholder" + price);
		if (hotel != null) {
			if (companion != null) {
				price += hotel.getPriceRoom2() * (days - 1);
			} else {
				price += hotel.getPriceRoom1() * (days - 1);
			}
		}
		System.out.println("Pris efter hotel" + price);
		if (companion != null) {
			price += companion.excurtionPrice();
		}
		System.out.println("Pris efter udflugt" + price);
			for (Extra e : extraList) {
				price += e.getAppendixPrice() * (days -1);
			}
			System.out.println("Pris efter extras" + price);


		return price;
	}